163647120 has 320 divisors, whose sum is σ = 639959040. Its totient is φ = 33675264.

The previous prime is 163647089. The next prime is 163647131. The reversal of 163647120 is 21746361.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1288497 + ... + 1288623.

It is an arithmetic number, because the mean of its divisors is an integer number (1999872).

Almost surely, 2^163647120 is an apocalyptic number.

163647120 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 163647120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319979520).

163647120 is an abundant number, since it is smaller than the sum of its proper divisors (476311920).

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

163647120 is a wasteful number, since it uses less digits than its factorization.

163647120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 163647120 is about 12792.4634062404. The cubic root of 163647120 is about 546.9774919523.

The spelling of 163647120 in words is "one hundred sixty-three million, six hundred forty-seven thousand, one hundred twenty".