213382764 has 36 divisors (see below), whose sum is σ = 616439824. Its totient is φ = 60966432.

The previous prime is 213382721. The next prime is 213382777. The reversal of 213382764 is 467283312.

It is a happy number.

213382764 is a `hidden beast` number, since 213 + 382 + 7 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423127 + ... + 423630.

Almost surely, 2^213382764 is an apocalyptic number.

It is an amenable number.

213382764 is an abundant number, since it is smaller than the sum of its proper divisors (403057060).

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

213382764 is a wasteful number, since it uses less digits than its factorization.

213382764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846774 (or 846769 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 213382764 is about 14607.6269119936. The cubic root of 213382764 is about 597.5667790654.

The spelling of 213382764 in words is "two hundred thirteen million, three hundred eighty-two thousand, seven hundred sixty-four".