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28502860051 = 192158349877
BaseRepresentation
bin11010100010111001…
…110010000100010011
32201120102011022110101
4122202321302010103
5431333213010201
621032151113231
72026220212231
oct324271620423
981512138411
1028502860051
11110a7137696
125635672817
1328c3164883
14154568b951
15b1c496d01
hex6a2e72113

28502860051 has 12 divisors (see below), whose sum is σ = 30101572512. Its totient is φ = 26985110544.

The previous prime is 28502860031. The next prime is 28502860079. The reversal of 28502860051 is 15006820582.

It is not a de Polignac number, because 28502860051 - 25 = 28502860019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28502860021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546525 + ... + 596401.

It is an arithmetic number, because the mean of its divisors is an integer number (2508464376).

Almost surely, 228502860051 is an apocalyptic number.

28502860051 is a deficient number, since it is larger than the sum of its proper divisors (1598712461).

28502860051 is a wasteful number, since it uses less digits than its factorization.

28502860051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51498 (or 51479 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 28502860051 in words is "twenty-eight billion, five hundred two million, eight hundred sixty thousand, fifty-one".

Divisors: 1 19 361 1583 30077 49877 571463 947663 18005597 78955291 1500150529 28502860051