12920576 has 36 divisors (see below), whose sum is σ = 26441184. Its totient is φ = 6297600.

The previous prime is 12920563. The next prime is 12920581. The reversal of 12920576 is 67502921.

12920576 = T₁₈₁ + T₁₈₂ + ... + T₄₃₆.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9881 + ... + 11111.

Almost surely, 2^12920576 is an apocalyptic number.

12920576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12920576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13220592).

12920576 is an abundant number, since it is smaller than the sum of its proper divisors (13520608).

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

12920576 is an equidigital number, since it uses as much as digits as its factorization.

12920576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 12920576 is about 3594.5202739726. The cubic root of 12920576 is about 234.6536379360.

The spelling of 12920576 in words is "twelve million, nine hundred twenty thousand, five hundred seventy-six".