213406504 has 16 divisors (see below), whose sum is σ = 400586400. Its totient is φ = 106583472.

The previous prime is 213406441. The next prime is 213406507. The reversal of 213406504 is 405604312.

It is not an unprimeable number, because it can be changed into a prime (213406507) 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, 7162 + ... + 21865.

It is an arithmetic number, because the mean of its divisors is an integer number (25036650).

Almost surely, 2^213406504 is an apocalyptic number.

It is an amenable number.

213406504 is a deficient number, since it is larger than the sum of its proper divisors (187179896).

213406504 is a wasteful number, since it uses less digits than its factorization.

213406504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29952 (or 29948 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 213406504 is about 14608.4394786028. The cubic root of 213406504 is about 597.5889391015.

The spelling of 213406504 in words is "two hundred thirteen million, four hundred six thousand, five hundred four".