172238560 has 96 divisors (see below), whose sum is σ = 464087232. Its totient is φ = 59842560.

The previous prime is 172238537. The next prime is 172238587. The reversal of 172238560 is 65832271.

It is a happy number.

172238560 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172238560² = 59332243101747200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 32925 + ... + 37795.

It is an arithmetic number, because the mean of its divisors is an integer number (4834242).

Almost surely, 2^172238560 is an apocalyptic number.

172238560 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 172238560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232043616).

172238560 is an abundant number, since it is smaller than the sum of its proper divisors (291848672).

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

172238560 is a wasteful number, since it uses less digits than its factorization.

172238560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916 (or 4908 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 172238560 is about 13123.9689118803. The cubic root of 172238560 is about 556.3867708960.

The spelling of 172238560 in words is "one hundred seventy-two million, two hundred thirty-eight thousand, five hundred sixty".