213933474 has 40 divisors (see below), whose sum is σ = 507574188. Its totient is φ = 67115520.

The previous prime is 213933431. The next prime is 213933497. The reversal of 213933474 is 474339312.

It can be written as a sum of positive squares in 2 ways, for example, as 213890625 + 42849 = 14625^2 + 207^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36087 + ... + 41594.

Almost surely, 2^213933474 is an apocalyptic number.

213933474 is an abundant number, since it is smaller than the sum of its proper divisors (293640714).

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

213933474 is a wasteful number, since it uses less digits than its factorization.

213933474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77712 (or 77703 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 213933474 is about 14626.4648497168. The cubic root of 213933474 is about 598.0804152064.

The spelling of 213933474 in words is "two hundred thirteen million, nine hundred thirty-three thousand, four hundred seventy-four".