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12974020 = 2252922369
BaseRepresentation
bin110001011111…
…011111000100
3220102011000021
4301133133010
511310132040
61142024524
7215164063
oct61373704
926364007
1012974020
117361634
124418144
1328c3447
141a1a1da
15121424a
hexc5f7c4

12974020 has 24 divisors (see below), whose sum is σ = 28186200. Its totient is φ = 5010432.

The previous prime is 12974011. The next prime is 12974023. The reversal of 12974020 is 2047921.

12974020 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 4 ways, for example, as 1236544 + 11737476 = 1112^2 + 3426^2 .

It is a super-3 number, since 3×129740203 (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12974023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10605 + ... + 11764.

It is an arithmetic number, because the mean of its divisors is an integer number (1174425).

Almost surely, 212974020 is an apocalyptic number.

12974020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12974020 is an abundant number, since it is smaller than the sum of its proper divisors (15212180).

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

12974020 is a wasteful number, since it uses less digits than its factorization.

12974020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22407 (or 22405 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12974020 is about 3601.9466958854. The cubic root of 12974020 is about 234.9767292484.

The spelling of 12974020 in words is "twelve million, nine hundred seventy-four thousand, twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 22369 44738 89476 111845 223690 447380 648701 1297402 2594804 3243505 6487010 12974020