213494756 has 12 divisors (see below), whose sum is σ = 374620092. Its totient is φ = 106460448.

The previous prime is 213494731. The next prime is 213494767. The reversal of 213494756 is 657494312.

It can be written as a sum of positive squares in 2 ways, for example, as 55741156 + 157753600 = 7466^2 + 12560^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70055 + ... + 73038.

It is an arithmetic number, because the mean of its divisors is an integer number (31218341).

Almost surely, 2^213494756 is an apocalyptic number.

It is an amenable number.

213494756 is a deficient number, since it is larger than the sum of its proper divisors (161125336).

213494756 is a wasteful number, since it uses less digits than its factorization.

213494756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143470 (or 143468 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 213494756 is about 14611.4597491147. The cubic root of 213494756 is about 597.6713032749.

The spelling of 213494756 in words is "two hundred thirteen million, four hundred ninety-four thousand, seven hundred fifty-six".