12520791 has 16 divisors (see below), whose sum is σ = 19526400. Its totient is φ = 7907544.

The previous prime is 12520777. The next prime is 12520793. The reversal of 12520791 is 19702521.

It is not a de Polignac number, because 12520791 - 2¹⁵ = 12488023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11691 + ... + 12716.

It is an arithmetic number, because the mean of its divisors is an integer number (1220400).

Almost surely, 2^12520791 is an apocalyptic number.

12520791 is a deficient number, since it is larger than the sum of its proper divisors (7005609).

12520791 is a wasteful number, since it uses less digits than its factorization.

12520791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24435 (or 24429 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12520791 is about 3538.4729757340. The cubic root of 12520791 is about 232.2080414391.

The spelling of 12520791 in words is "twelve million, five hundred twenty thousand, seven hundred ninety-one".