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28395511559382 = 23117331051558469
BaseRepresentation
bin1100111010011010110000…
…11000010011010011010110
310201112120210000121212111110
412131031120120103103112
512210213001424400012
6140220415023315450
75660336150564352
oct635153030232326
9121476700555443
1028395511559382
119058518007810
1232272a744bb86
1312ac8ba658cb6
147024c8922462
1534397463b73c
hex19d3586134d6

28395511559382 has 64 divisors (see below), whose sum is σ = 62097503466240. Its totient is φ = 8584770096000.

The previous prime is 28395511559309. The next prime is 28395511559413.

28395511559382 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

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, 50566044 + ... + 51124512.

It is an arithmetic number, because the mean of its divisors is an integer number (970273491660).

Almost surely, 228395511559382 is an apocalyptic number.

28395511559382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28395511559382 is an abundant number, since it is smaller than the sum of its proper divisors (33701991906858).

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

28395511559382 is a wasteful number, since it uses less digits than its factorization.

28395511559382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560269.

The product of its digits is 116640000, while the sum is 66.

The spelling of 28395511559382 in words is "twenty-eight trillion, three hundred ninety-five billion, five hundred eleven million, five hundred fifty-nine thousand, three hundred eighty-two".

Divisors: 1 2 3 6 11 22 33 66 733 1051 1466 2102 2199 3153 4398 6306 8063 11561 16126 23122 24189 34683 48378 69366 558469 770383 1116938 1540766 1675407 2311149 3350814 4622298 6143159 8474213 12286318 16948426 18429477 25422639 36858954 50845278 409357777 586950919 818715554 1173901838 1228073331 1760852757 2456146662 3521705514 4502935547 6456460109 9005871094 12912920218 13508806641 19369380327 27017613282 38738760654 430235023627 860470047254 1290705070881 2581410141762 4732585259897 9465170519794 14197755779691 28395511559382