12501816 has 32 divisors (see below), whose sum is σ = 31363200. Its totient is φ = 4152800.

The previous prime is 12501809. The next prime is 12501821. The reversal of 12501816 is 61810521.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7891 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (980100).

Almost surely, 2^12501816 is an apocalyptic number.

It is an amenable number.

12501816 is an abundant number, since it is smaller than the sum of its proper divisors (18861384).

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

12501816 is a wasteful number, since it uses less digits than its factorization.

12501816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1815 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 12501816 is about 3535.7907177886. The cubic root of 12501816 is about 232.0906799702.

The spelling of 12501816 in words is "twelve million, five hundred one thousand, eight hundred sixteen".