12920846 has 4 divisors (see below), whose sum is σ = 19381272. Its totient is φ = 6460422.

The previous prime is 12920839. The next prime is 12920857. The reversal of 12920846 is 64802921.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12920846² = 333896522711432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230210 + ... + 3230213.

It is an arithmetic number, because the mean of its divisors is an integer number (4845318).

Almost surely, 2^12920846 is an apocalyptic number.

12920846 is a deficient number, since it is larger than the sum of its proper divisors (6460426).

12920846 is an equidigital number, since it uses as much as digits as its factorization.

12920846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6460425.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12920846 is about 3594.5578309439. The cubic root of 12920846 is about 234.6552724359.

The spelling of 12920846 in words is "twelve million, nine hundred twenty thousand, eight hundred forty-six".