216632494 has 32 divisors (see below), whose sum is σ = 369774720. Its totient is φ = 94467072.

The previous prime is 216632467. The next prime is 216632501. The reversal of 216632494 is 494236612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32382 + ... + 38494.

It is an arithmetic number, because the mean of its divisors is an integer number (11555460).

Almost surely, 2^216632494 is an apocalyptic number.

216632494 is a deficient number, since it is larger than the sum of its proper divisors (153142226).

216632494 is a wasteful number, since it uses less digits than its factorization.

216632494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204.

The product of its digits is 62208, while the sum is 37.

The square root of 216632494 is about 14718.4406103364. The cubic root of 216632494 is about 600.5850718920.

The spelling of 216632494 in words is "two hundred sixteen million, six hundred thirty-two thousand, four hundred ninety-four".