216743464 has 24 divisors (see below), whose sum is σ = 472744890. Its totient is φ = 92889888.

The previous prime is 216743441. The next prime is 216743473. The reversal of 216743464 is 464347612.

It can be written as a sum of positive squares in only one way, i.e., 142611364 + 74132100 = 11942^2 + 8610^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276067 + ... + 276850.

Almost surely, 2^216743464 is an apocalyptic number.

It is an amenable number.

216743464 is an abundant number, since it is smaller than the sum of its proper divisors (256001426).

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

216743464 is a wasteful number, since it uses less digits than its factorization.

216743464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552937 (or 552926 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 216743464 is about 14722.2098884644. The cubic root of 216743464 is about 600.6876042921.

The spelling of 216743464 in words is "two hundred sixteen million, seven hundred forty-three thousand, four hundred sixty-four".