213487528 has 16 divisors (see below), whose sum is σ = 400685760. Its totient is φ = 106638000.

The previous prime is 213487523. The next prime is 213487543. The reversal of 213487528 is 825784312.

It is a happy number.

It is a super-2 number, since 2×213487528² = 91153849223101568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213487523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4288 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (25042860).

Almost surely, 2^213487528 is an apocalyptic number.

It is an amenable number.

213487528 is a deficient number, since it is larger than the sum of its proper divisors (187198232).

213487528 is a wasteful number, since it uses less digits than its factorization.

213487528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26448 (or 26444 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 213487528 is about 14611.2124069155. The cubic root of 213487528 is about 597.6645583522.

The spelling of 213487528 in words is "two hundred thirteen million, four hundred eighty-seven thousand, five hundred twenty-eight".