213455964 has 48 divisors (see below), whose sum is σ = 505336832. Its totient is φ = 70120512.

The previous prime is 213455959. The next prime is 213455971. The reversal of 213455964 is 469554312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460797 + ... + 461259.

Almost surely, 2^213455964 is an apocalyptic number.

It is an amenable number.

213455964 is an abundant number, since it is smaller than the sum of its proper divisors (291880868).

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

213455964 is a wasteful number, since it uses less digits than its factorization.

213455964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946 (or 944 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 213455964 is about 14610.1322375946. The cubic root of 213455964 is about 597.6351021210.

The spelling of 213455964 in words is "two hundred thirteen million, four hundred fifty-five thousand, nine hundred sixty-four".