213256524 has 48 divisors (see below), whose sum is σ = 546007392. Its totient is φ = 64376832.

The previous prime is 213256507. The next prime is 213256543. The reversal of 213256524 is 425652312.

It is a junction number, because it is equal to n+sod(n) for n = 213256491 and 213256500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4629 + ... + 21164.

It is an arithmetic number, because the mean of its divisors is an integer number (11375154).

Almost surely, 2^213256524 is an apocalyptic number.

It is an amenable number.

213256524 is an abundant number, since it is smaller than the sum of its proper divisors (332750868).

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

213256524 is a wasteful number, since it uses less digits than its factorization.

213256524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25866 (or 25864 counting only the distinct ones).

The product of its digits is 14400, while the sum is 30.

The square root of 213256524 is about 14603.3052423073. The cubic root of 213256524 is about 597.4489130764.

The spelling of 213256524 in words is "two hundred thirteen million, two hundred fifty-six thousand, five hundred twenty-four".