213634368 has 56 divisors (see below), whose sum is σ = 628050560. Its totient is φ = 71210880.

The previous prime is 213634357. The next prime is 213634409. The reversal of 213634368 is 863436312.

213634368 is a `hidden beast` number, since 2 + 13 + 634 + 3 + 6 + 8 = 666.

213634368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60088 + ... + 63543.

Almost surely, 2^213634368 is an apocalyptic number.

It is an amenable number.

213634368 is an abundant number, since it is smaller than the sum of its proper divisors (414416192).

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

213634368 is a wasteful number, since it uses less digits than its factorization.

213634368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123652 (or 123636 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 213634368 is about 14616.2364512894. The cubic root of 213634368 is about 597.8015545678.

The spelling of 213634368 in words is "two hundred thirteen million, six hundred thirty-four thousand, three hundred sixty-eight".