216792720 has 160 divisors (see below), whose sum is σ = 752451840. Its totient is φ = 57369600.

The previous prime is 216792691. The next prime is 216792739. The reversal of 216792720 is 27297612.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 360420 + ... + 361020.

It is an arithmetic number, because the mean of its divisors is an integer number (4702824).

Almost surely, 2^216792720 is an apocalyptic number.

216792720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216792720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376225920).

216792720 is an abundant number, since it is smaller than the sum of its proper divisors (535659120).

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

216792720 is a wasteful number, since it uses less digits than its factorization.

216792720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 216792720 is about 14723.8826401191. The cubic root of 216792720 is about 600.7331038996.

The spelling of 216792720 in words is "two hundred sixteen million, seven hundred ninety-two thousand, seven hundred twenty".