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28055760524 = 2211826377167
BaseRepresentation
bin11010001000010000…
…001110111010001100
32200102020212022012122
4122020100032322030
5424424233314044
620515540152112
72012151013121
oct321020167214
980366768178
1028055760524
1110997822150
12552b998638
13285164213c
141502146748
15ae30ccdee
hex68840ee8c

28055760524 has 24 divisors (see below), whose sum is σ = 53568173568. Its totient is φ = 12750909840.

The previous prime is 28055760517. The next prime is 28055760553. The reversal of 28055760524 is 42506755082.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324989 + ... + 402155.

It is an arithmetic number, because the mean of its divisors is an integer number (2232007232).

Almost surely, 228055760524 is an apocalyptic number.

It is an amenable number.

28055760524 is a deficient number, since it is larger than the sum of its proper divisors (25512413044).

28055760524 is a wasteful number, since it uses less digits than its factorization.

28055760524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85445 (or 85443 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 28055760524 in words is "twenty-eight billion, fifty-five million, seven hundred sixty thousand, five hundred twenty-four".

Divisors: 1 2 4 11 22 44 8263 16526 33052 77167 90893 154334 181786 308668 363572 848837 1697674 3395348 637630921 1275261842 2550523684 7013940131 14027880262 28055760524