172860478 has 16 divisors (see below), whose sum is σ = 296947584. Its totient is φ = 73929240.

The previous prime is 172860463. The next prime is 172860481. The reversal of 172860478 is 874068271.

172860478 is digitally balanced in base 2, 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, 5700 + ... + 19447.

It is an arithmetic number, because the mean of its divisors is an integer number (18559224).

Almost surely, 2^172860478 is an apocalyptic number.

172860478 is a deficient number, since it is larger than the sum of its proper divisors (124087106).

172860478 is a wasteful number, since it uses less digits than its factorization.

172860478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25647.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 172860478 is about 13147.6415375534. The cubic root of 172860478 is about 557.0556325490.

The spelling of 172860478 in words is "one hundred seventy-two million, eight hundred sixty thousand, four hundred seventy-eight".