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12928801 = 64320107
BaseRepresentation
bin110001010100…
…011100100001
3220022211222111
4301110130201
511302210201
61141035321
7214615204
oct61243441
926284874
1012928801
117330666
1243b5b41
1328a89a2
141a0793b
151205b51
hexc54721

12928801 has 4 divisors (see below), whose sum is σ = 12949552. Its totient is φ = 12908052.

The previous prime is 12928757. The next prime is 12928813. The reversal of 12928801 is 10882921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12928801 - 27 = 12928673 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (12928841) 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, 9411 + ... + 10696.

It is an arithmetic number, because the mean of its divisors is an integer number (3237388).

Almost surely, 212928801 is an apocalyptic number.

It is an amenable number.

12928801 is a deficient number, since it is larger than the sum of its proper divisors (20751).

12928801 is an equidigital number, since it uses as much as digits as its factorization.

12928801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20750.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 12928801 is about 3595.6641945543. The cubic root of 12928801 is about 234.7034194312.

The spelling of 12928801 in words is "twelve million, nine hundred twenty-eight thousand, eight hundred one".

Divisors: 1 643 20107 12928801