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28481050151500 = 2253611553601291
BaseRepresentation
bin1100111100111010000101…
…11000001000101001001100
310201211202120100120120112211
412132131002320020221030
512213113142314322000
6140324002552240204
75666454654613012
oct636350270105114
9121752510516484
1028481050151500
119090822347051
12323b99a0a0064
1312b79a009754b
147066c10bc8b2
15345ccde9e7ba
hex19e742e08a4c

28481050151500 has 96 divisors (see below), whose sum is σ = 63263143524672. Its totient is φ = 11198424960000.

The previous prime is 28481050151497. The next prime is 28481050151537. The reversal of 28481050151500 is 515105018482.

It is a happy number.

It is a super-2 number, since 2×284810501515002 (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47065855 + ... + 47667145.

It is an arithmetic number, because the mean of its divisors is an integer number (658991078382).

Almost surely, 228481050151500 is an apocalyptic number.

28481050151500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28481050151500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31631571762336).

28481050151500 is an abundant number, since it is smaller than the sum of its proper divisors (34782093373172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28481050151500 is a wasteful number, since it uses less digits than its factorization.

28481050151500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602924 (or 602912 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 40.

Adding to 28481050151500 its reverse (515105018482), we get a palindrome (28996155169982).

The spelling of 28481050151500 in words is "twenty-eight trillion, four hundred eighty-one billion, fifty million, one hundred fifty-one thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 61 100 122 125 244 250 305 500 610 1220 1525 1553 3050 3106 6100 6212 7625 7765 15250 15530 30500 31060 38825 77650 94733 155300 189466 194125 378932 388250 473665 601291 776500 947330 1202582 1894660 2368325 2405164 3006455 4736650 6012910 9473300 11841625 12025820 15032275 23683250 30064550 36678751 47366500 60129100 73357502 75161375 146715004 150322750 183393755 300645500 366787510 733575020 916968775 933804923 1833937550 1867609846 3667875100 3735219692 4584843875 4669024615 9169687750 9338049230 18339375500 18676098460 23345123075 46690246150 56962100303 93380492300 113924200606 116725615375 227848401212 233451230750 284810501515 466902461500 569621003030 1139242006060 1424052507575 2848105015150 5696210030300 7120262537875 14240525075750 28481050151500