172133456 has 20 divisors (see below), whose sum is σ = 363827904. Its totient is φ = 78242400.

The previous prime is 172133441. The next prime is 172133471. The reversal of 172133456 is 654331271.

It is an interprime number because it is at equal distance from previous prime (172133441) and next prime (172133471).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488840 + ... + 489191.

Almost surely, 2^172133456 is an apocalyptic number.

172133456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172133456 is an abundant number, since it is smaller than the sum of its proper divisors (191694448).

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

172133456 is a wasteful number, since it uses less digits than its factorization.

172133456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978050 (or 978044 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 172133456 is about 13119.9640243409. The cubic root of 172133456 is about 556.2735744585.

The spelling of 172133456 in words is "one hundred seventy-two million, one hundred thirty-three thousand, four hundred fifty-six".