316721792 has 64 divisors (see below), whose sum is σ = 685766400. Its totient is φ = 145152000.

The previous prime is 316721791. The next prime is 316721803. The reversal of 316721792 is 297127613.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (316721791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73292 + ... + 77492.

It is an arithmetic number, because the mean of its divisors is an integer number (10715100).

Almost surely, 2^316721792 is an apocalyptic number.

316721792 is a gapful number since it is divisible by the number (32) 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 316721792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342883200).

316721792 is an abundant number, since it is smaller than the sum of its proper divisors (369044608).

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

316721792 is a wasteful number, since it uses less digits than its factorization.

316721792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265 (or 4253 counting only the distinct ones).

The product of its digits is 31752, while the sum is 38.

The square root of 316721792 is about 17796.6792408022. The cubic root of 316721792 is about 681.6466667042.

The spelling of 316721792 in words is "three hundred sixteen million, seven hundred twenty-one thousand, seven hundred ninety-two".