162977820 has 48 divisors (see below), whose sum is σ = 480359040. Its totient is φ = 41173056.

The previous prime is 162977813. The next prime is 162977831. The reversal of 162977820 is 28779261.

162977820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 70342 + ... + 72621.

It is an arithmetic number, because the mean of its divisors is an integer number (10007480).

Almost surely, 2^162977820 is an apocalyptic number.

162977820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162977820 is an abundant number, since it is smaller than the sum of its proper divisors (317381220).

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

162977820 is a wasteful number, since it uses less digits than its factorization.

162977820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142994 (or 142992 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 162977820 is about 12766.2766694131. The cubic root of 162977820 is about 546.2307790139.

The spelling of 162977820 in words is "one hundred sixty-two million, nine hundred seventy-seven thousand, eight hundred twenty".