172347240 has 64 divisors (see below), whose sum is σ = 556819200. Its totient is φ = 42423552.

The previous prime is 172347239. The next prime is 172347247. The reversal of 172347240 is 42743271.

172347240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172347240² = 59407142271235200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 172347198 and 172347207.

It is not an unprimeable number, because it can be changed into a prime (172347247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53680 + ... + 56799.

It is an arithmetic number, because the mean of its divisors is an integer number (8700300).

Almost surely, 2^172347240 is an apocalyptic number.

172347240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172347240 is an abundant number, since it is smaller than the sum of its proper divisors (384471960).

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

172347240 is a wasteful number, since it uses less digits than its factorization.

172347240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110506 (or 110502 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 172347240 is about 13128.1087746865. The cubic root of 172347240 is about 556.5037702496.

The spelling of 172347240 in words is "one hundred seventy-two million, three hundred forty-seven thousand, two hundred forty".