162921140 has 24 divisors (see below), whose sum is σ = 345166920. Its totient is φ = 64590848.

The previous prime is 162921137. The next prime is 162921169. The reversal of 162921140 is 41129261.

It can be written as a sum of positive squares in 4 ways, for example, as 2999824 + 159921316 = 1732^2 + 12646^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 33785 + ... + 38304.

It is an arithmetic number, because the mean of its divisors is an integer number (14381955).

Almost surely, 2^162921140 is an apocalyptic number.

162921140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162921140 is an abundant number, since it is smaller than the sum of its proper divisors (182245780).

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

162921140 is a wasteful number, since it uses less digits than its factorization.

162921140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72211 (or 72209 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 162921140 is about 12764.0565652147. The cubic root of 162921140 is about 546.1674494346.

The spelling of 162921140 in words is "one hundred sixty-two million, nine hundred twenty-one thousand, one hundred forty".