172879672 has 32 divisors (see below), whose sum is σ = 383234400. Its totient is φ = 71535744.

The previous prime is 172879633. The next prime is 172879691. The reversal of 172879672 is 276978271.

172879672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51603 + ... + 54850.

It is an arithmetic number, because the mean of its divisors is an integer number (11976075).

Almost surely, 2^172879672 is an apocalyptic number.

It is an amenable number.

172879672 is an abundant number, since it is smaller than the sum of its proper divisors (210354728).

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

172879672 is a wasteful number, since it uses less digits than its factorization.

172879672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106495 (or 106491 counting only the distinct ones).

The product of its digits is 592704, while the sum is 49.

The square root of 172879672 is about 13148.3714580932. The cubic root of 172879672 is about 557.0762498126.

It can be divided in two parts, 172 and 879672, that added together give a square (879844 = 938²).

The spelling of 172879672 in words is "one hundred seventy-two million, eight hundred seventy-nine thousand, six hundred seventy-two".