213906472 has 32 divisors (see below), whose sum is σ = 443608200. Its totient is φ = 96056064.

The previous prime is 213906431. The next prime is 213906557. The reversal of 213906472 is 274609312.

It can be written as a sum of positive squares in 4 ways, for example, as 124679556 + 89226916 = 11166^2 + 9446^2 .

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, 23947 + ... + 31642.

Almost surely, 2^213906472 is an apocalyptic number.

It is an amenable number.

213906472 is an abundant number, since it is smaller than the sum of its proper divisors (229701728).

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

213906472 is a wasteful number, since it uses less digits than its factorization.

213906472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55645 (or 55641 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 213906472 is about 14625.5417677432. The cubic root of 213906472 is about 598.0552515475.

The spelling of 213906472 in words is "two hundred thirteen million, nine hundred six thousand, four hundred seventy-two".