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12935620 = 225646781
BaseRepresentation
bin110001010110…
…000111000100
3220100012100001
4301112013010
511302414440
61141131044
7214644115
oct61260704
926305301
1012935620
1173357a5
1243b9a84
1328abb19
141a0a20c
151207b9a
hexc561c4

12935620 has 12 divisors (see below), whose sum is σ = 27164844. Its totient is φ = 5174240.

The previous prime is 12935617. The next prime is 12935621. The reversal of 12935620 is 2653921.

It can be written as a sum of positive squares in 2 ways, for example, as 6625476 + 6310144 = 2574^2 + 2512^2 .

It is not an unprimeable number, because it can be changed into a prime (12935621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323371 + ... + 323410.

It is an arithmetic number, because the mean of its divisors is an integer number (2263737).

Almost surely, 212935620 is an apocalyptic number.

12935620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12935620 is an abundant number, since it is smaller than the sum of its proper divisors (14229224).

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

12935620 is a wasteful number, since it uses less digits than its factorization.

12935620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646790 (or 646788 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 12935620 is about 3596.6122949242. The cubic root of 12935620 is about 234.7446751601.

The spelling of 12935620 in words is "twelve million, nine hundred thirty-five thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 646781 1293562 2587124 3233905 6467810 12935620