162155880 has 192 divisors, whose sum is σ = 561974400. Its totient is φ = 40435200.

The previous prime is 162155857. The next prime is 162155891. The reversal of 162155880 is 88551261.

162155880 is a `hidden beast` number, since 1 + 6 + 21 + 558 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1032762 + ... + 1032918.

It is an arithmetic number, because the mean of its divisors is an integer number (2926950).

Almost surely, 2^162155880 is an apocalyptic number.

162155880 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 162155880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280987200).

162155880 is an abundant number, since it is smaller than the sum of its proper divisors (399818520).

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

162155880 is a wasteful number, since it uses less digits than its factorization.

162155880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 162155880 is about 12734.0441337385. The cubic root of 162155880 is about 545.3109691804.

The spelling of 162155880 in words is "one hundred sixty-two million, one hundred fifty-five thousand, eight hundred eighty".