172868415 has 8 divisors (see below), whose sum is σ = 276589488. Its totient is φ = 92196480.

The previous prime is 172868411. The next prime is 172868429. The reversal of 172868415 is 514868271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172868415 - 2² = 172868411 is a prime.

It is a super-2 number, since 2×172868415² = 59766977809224450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172868411) 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, 5762266 + ... + 5762295.

It is an arithmetic number, because the mean of its divisors is an integer number (34573686).

Almost surely, 2^172868415 is an apocalyptic number.

172868415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172868415 is a deficient number, since it is larger than the sum of its proper divisors (103721073).

172868415 is a wasteful number, since it uses less digits than its factorization.

172868415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11524569.

The product of its digits is 107520, while the sum is 42.

The square root of 172868415 is about 13147.9433752964. The cubic root of 172868415 is about 557.0641582744.

The spelling of 172868415 in words is "one hundred seventy-two million, eight hundred sixty-eight thousand, four hundred fifteen".