162979640 has 32 divisors (see below), whose sum is σ = 368746560. Its totient is φ = 64828800.

The previous prime is 162979639. The next prime is 162979669. The reversal of 162979640 is 46979261.

It is a junction number, because it is equal to n+sod(n) for n = 162979591 and 162979600.

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, 4016 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (11523330).

Almost surely, 2^162979640 is an apocalyptic number.

162979640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162979640 is an abundant number, since it is smaller than the sum of its proper divisors (205766920).

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

162979640 is a wasteful number, since it uses less digits than its factorization.

162979640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22703 (or 22699 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 162979640 is about 12766.3479507649. The cubic root of 162979640 is about 546.2328122892.

The spelling of 162979640 in words is "one hundred sixty-two million, nine hundred seventy-nine thousand, six hundred forty".