213600138 has 32 divisors (see below), whose sum is σ = 467933760. Its totient is φ = 64700160.

The previous prime is 213600133. The next prime is 213600143. The reversal of 213600138 is 831006312.

It is an interprime number because it is at equal distance from previous prime (213600133) and next prime (213600143).

It is not an unprimeable number, because it can be changed into a prime (213600131) 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, 33148 + ... + 39063.

It is an arithmetic number, because the mean of its divisors is an integer number (14622930).

Almost surely, 2^213600138 is an apocalyptic number.

213600138 is an abundant number, since it is smaller than the sum of its proper divisors (254333622).

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

213600138 is a wasteful number, since it uses less digits than its factorization.

213600138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72262.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 213600138 is about 14615.0654463126. The cubic root of 213600138 is about 597.7696248735.

The spelling of 213600138 in words is "two hundred thirteen million, six hundred thousand, one hundred thirty-eight".