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28810750248 = 23337179106451
BaseRepresentation
bin11010110101010000…
…010010100100101000
32202100212111202102000
4122311100102210220
5433001023001443
621122510211000
72036646223260
oct326520224450
982325452360
1028810750248
1111244a100a5
1257007b3a60
132941b95b17
1415745167a0
15b395138d3
hex6b5412928

28810750248 has 128 divisors (see below), whose sum is σ = 91974528000. Its totient is φ = 8185579200.

The previous prime is 28810750231. The next prime is 28810750261. The reversal of 28810750248 is 84205701882.

It is a happy number.

28810750248 is a `hidden beast` number, since 28 + 81 + 0 + 7 + 502 + 48 = 666.

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, 217423 + ... + 323873.

It is an arithmetic number, because the mean of its divisors is an integer number (718551000).

Almost surely, 228810750248 is an apocalyptic number.

28810750248 is a gapful number since it is divisible by the number (28) 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 28810750248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45987264000).

28810750248 is an abundant number, since it is smaller than the sum of its proper divisors (63163777752).

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

28810750248 is a wasteful number, since it uses less digits than its factorization.

28810750248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106652 (or 106642 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 28810750248 in words is "twenty-eight billion, eight hundred ten million, seven hundred fifty thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 168 179 189 216 252 358 378 504 537 716 756 1074 1253 1432 1512 1611 2148 2506 3222 3759 4296 4833 5012 6444 7518 9666 10024 11277 12888 15036 19332 22554 30072 33831 38664 45108 67662 90216 106451 135324 212902 270648 319353 425804 638706 745157 851608 958059 1277412 1490314 1916118 2235471 2554824 2874177 2980628 3832236 4470942 5748354 5961256 6706413 7664472 8941884 11496708 13412826 17883768 19054729 20119239 22993416 26825652 38109458 40238478 53651304 57164187 76218916 80476956 114328374 133383103 152437832 160953912 171492561 228656748 266766206 342985122 400149309 457313496 514477683 533532412 685970244 800298618 1028955366 1067064824 1200447927 1371940488 1600597236 2057910732 2400895854 3201194472 3601343781 4115821464 4801791708 7202687562 9603583416 14405375124 28810750248