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30656251444 = 2271384220471
BaseRepresentation
bin11100100011010000…
…010100011000110100
32221010111010221010011
4130203100110120310
51000241000021234
622025553510004
72133455560240
oct344320243064
987114127104
1030656251444
11120017224a5
125b36872304
132b77327670
1416ab675420
15be6558b64
hex723414634

30656251444 has 24 divisors (see below), whose sum is σ = 66028850048. Its totient is φ = 12127747680.

The previous prime is 30656251403. The next prime is 30656251459. The reversal of 30656251444 is 44415265603.

It is a super-3 number, since 3×306562514443 (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30656251397 and 30656251406.

It is a congruent number.

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, 42109872 + ... + 42110599.

Almost surely, 230656251444 is an apocalyptic number.

It is an amenable number.

30656251444 is an abundant number, since it is smaller than the sum of its proper divisors (35372598604).

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

30656251444 is a wasteful number, since it uses less digits than its factorization.

30656251444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84220495 (or 84220493 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 30656251444 in words is "thirty billion, six hundred fifty-six million, two hundred fifty-one thousand, four hundred forty-four".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 84220471 168440942 336881884 589543297 1094866123 1179086594 2189732246 2358173188 4379464492 7664062861 15328125722 30656251444