159472720 has 40 divisors (see below), whose sum is σ = 404483040. Its totient is φ = 57989760.

The previous prime is 159472717. The next prime is 159472723. The reversal of 159472720 is 27274951.

It is an interprime number because it is at equal distance from previous prime (159472717) and next prime (159472723).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 159472720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159472723) 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, 89730 + ... + 91489.

It is an arithmetic number, because the mean of its divisors is an integer number (10112076).

Almost surely, 2^159472720 is an apocalyptic number.

159472720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159472720 is an abundant number, since it is smaller than the sum of its proper divisors (245010320).

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

159472720 is a wasteful number, since it uses less digits than its factorization.

159472720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181243 (or 181237 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 159472720 is about 12628.2508685883. The cubic root of 159472720 is about 542.2865094678.

The spelling of 159472720 in words is "one hundred fifty-nine million, four hundred seventy-two thousand, seven hundred twenty".