12620445 has 32 divisors (see below), whose sum is σ = 21295872. Its totient is φ = 6369792.

The previous prime is 12620437. The next prime is 12620479. The reversal of 12620445 is 54402621.

It is not a de Polignac number, because 12620445 - 2³ = 12620437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54049 + ... + 54281.

It is an arithmetic number, because the mean of its divisors is an integer number (665496).

Almost surely, 2^12620445 is an apocalyptic number.

12620445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12620445 is a deficient number, since it is larger than the sum of its proper divisors (8675427).

12620445 is a wasteful number, since it uses less digits than its factorization.

12620445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 12620445 is about 3552.5265656994. The cubic root of 12620445 is about 232.8224684860.

The spelling of 12620445 in words is "twelve million, six hundred twenty thousand, four hundred forty-five".