162972730 has 16 divisors (see below), whose sum is σ = 293539464. Its totient is φ = 65147200.

The previous prime is 162972713. The next prime is 162972757. The reversal of 162972730 is 37279261.

162972730 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 79085449 + 83887281 = 8893^2 + 9159^2 .

It is a super-2 number, since 2×162972730² = 53120221447305800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 162972730.

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, 14724 + ... + 23296.

Almost surely, 2^162972730 is an apocalyptic number.

162972730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

162972730 is a deficient number, since it is larger than the sum of its proper divisors (130566734).

162972730 is a wasteful number, since it uses less digits than its factorization.

162972730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 162972730 is about 12766.0773145082. The cubic root of 162972730 is about 546.2250924659.

The spelling of 162972730 in words is "one hundred sixty-two million, nine hundred seventy-two thousand, seven hundred thirty".