213904974 has 16 divisors (see below), whose sum is σ = 428453712. Its totient is φ = 71194368.

The previous prime is 213904967. The next prime is 213904981. The reversal of 213904974 is 479409312.

It is an interprime number because it is at equal distance from previous prime (213904967) and next prime (213904981).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22449 + ... + 30524.

It is an arithmetic number, because the mean of its divisors is an integer number (26778357).

Almost surely, 2^213904974 is an apocalyptic number.

213904974 is an abundant number, since it is smaller than the sum of its proper divisors (214548738).

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

213904974 is a wasteful number, since it uses less digits than its factorization.

213904974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53651.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 213904974 is about 14625.4905558754. The cubic root of 213904974 is about 598.0538554719.

The spelling of 213904974 in words is "two hundred thirteen million, nine hundred four thousand, nine hundred seventy-four".