216732494 has 8 divisors (see below), whose sum is σ = 354653208. Its totient is φ = 98514760.

The previous prime is 216732491. The next prime is 216732499. The reversal of 216732494 is 494237612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216732491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4925717 + ... + 4925760.

It is an arithmetic number, because the mean of its divisors is an integer number (44331651).

Almost surely, 2^216732494 is an apocalyptic number.

216732494 is a deficient number, since it is larger than the sum of its proper divisors (137920714).

216732494 is a wasteful number, since it uses less digits than its factorization.

216732494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9851490.

The product of its digits is 72576, while the sum is 38.

The square root of 216732494 is about 14721.8373174003. The cubic root of 216732494 is about 600.6774699547.

The spelling of 216732494 in words is "two hundred sixteen million, seven hundred thirty-two thousand, four hundred ninety-four".