163120840 has 32 divisors (see below), whose sum is σ = 373248000. Its totient is φ = 64141504.

The previous prime is 163120829. The next prime is 163120847. The reversal of 163120840 is 48021361.

It is not an unprimeable number, because it can be changed into a prime (163120847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32200 + ... + 36919.

It is an arithmetic number, because the mean of its divisors is an integer number (11664000).

Almost surely, 2^163120840 is an apocalyptic number.

163120840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163120840 is an abundant number, since it is smaller than the sum of its proper divisors (210127160).

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

163120840 is a wasteful number, since it uses less digits than its factorization.

163120840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69189 (or 69185 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 163120840 is about 12771.8769176656. The cubic root of 163120840 is about 546.3905125805.

The spelling of 163120840 in words is "one hundred sixty-three million, one hundred twenty thousand, eight hundred forty".