216173132 has 24 divisors (see below), whose sum is σ = 438439680. Its totient is φ = 91339920.

The previous prime is 216173123. The next prime is 216173141. The reversal of 216173132 is 231371612.

It is an interprime number because it is at equal distance from previous prime (216173123) and next prime (216173141).

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, 52382 + ... + 56357.

It is an arithmetic number, because the mean of its divisors is an integer number (18268320).

Almost surely, 2^216173132 is an apocalyptic number.

It is an amenable number.

216173132 is an abundant number, since it is smaller than the sum of its proper divisors (222266548).

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

216173132 is a wasteful number, since it uses less digits than its factorization.

216173132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108821 (or 108819 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 216173132 is about 14702.8273471465. The cubic root of 216173132 is about 600.1602645957.

The spelling of 216173132 in words is "two hundred sixteen million, one hundred seventy-three thousand, one hundred thirty-two".