162979720 has 64 divisors (see below), whose sum is σ = 389188800. Its totient is φ = 61251840.

The previous prime is 162979703. The next prime is 162979753. The reversal of 162979720 is 27979261.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 98742 + ... + 100378.

It is an arithmetic number, because the mean of its divisors is an integer number (6081075).

Almost surely, 2^162979720 is an apocalyptic number.

162979720 is a gapful number since it is divisible by the number (10) 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 162979720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194594400).

162979720 is an abundant number, since it is smaller than the sum of its proper divisors (226209080).

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

162979720 is a wasteful number, since it uses less digits than its factorization.

162979720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 162979720 is about 12766.3510840020. The cubic root of 162979720 is about 546.2329016636.

The spelling of 162979720 in words is "one hundred sixty-two million, nine hundred seventy-nine thousand, seven hundred twenty".