12521892 has 48 divisors (see below), whose sum is σ = 30933504. Its totient is φ = 3936000.

The previous prime is 12521891. The next prime is 12521903. The reversal of 12521892 is 29812521.

12521892 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (12521891) 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, 14842 + ... + 15662.

It is an arithmetic number, because the mean of its divisors is an integer number (644448).

Almost surely, 2^12521892 is an apocalyptic number.

12521892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12521892 is an abundant number, since it is smaller than the sum of its proper divisors (18411612).

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

12521892 is a wasteful number, since it uses less digits than its factorization.

12521892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 898 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

The square root of 12521892 is about 3538.6285478982. The cubic root of 12521892 is about 232.2148475469.

The spelling of 12521892 in words is "twelve million, five hundred twenty-one thousand, eight hundred ninety-two".