212164074 has 24 divisors (see below), whose sum is σ = 464857380. Its totient is φ = 69926208.

The previous prime is 212164033. The next prime is 212164151. The reversal of 212164074 is 470461212.

212164074 is a `hidden beast` number, since 2 + 12 + 1 + 640 + 7 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 210047049 + 2117025 = 14493^2 + 1455^2 .

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, 64617 + ... + 67820.

Almost surely, 2^212164074 is an apocalyptic number.

212164074 is an abundant number, since it is smaller than the sum of its proper divisors (252693306).

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

212164074 is a wasteful number, since it uses less digits than its factorization.

212164074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132534 (or 132531 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 212164074 is about 14565.8530131263. The cubic root of 212164074 is about 596.4269814669.

The spelling of 212164074 in words is "two hundred twelve million, one hundred sixty-four thousand, seventy-four".