247572172 has 24 divisors (see below), whose sum is σ = 440923392. Its totient is φ = 121606800.

The previous prime is 247572137. The next prime is 247572179. The reversal of 247572172 is 271275742.

247572172 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 2×247572172² = 122583960697595168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247572179) 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, 86923 + ... + 89725.

It is an arithmetic number, because the mean of its divisors is an integer number (18371808).

Almost surely, 2^247572172 is an apocalyptic number.

It is an amenable number.

247572172 is a deficient number, since it is larger than the sum of its proper divisors (193351220).

247572172 is a wasteful number, since it uses less digits than its factorization.

247572172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189 (or 3187 counting only the distinct ones).

The product of its digits is 54880, while the sum is 37.

The square root of 247572172 is about 15734.4263320910. The cubic root of 247572172 is about 627.9146401081.

It can be divided in two parts, 2475 and 72172, that added together give a palindrome (74647).

The spelling of 247572172 in words is "two hundred forty-seven million, five hundred seventy-two thousand, one hundred seventy-two".