172373232 has 80 divisors (see below), whose sum is σ = 464113152. Its totient is φ = 55077120.

The previous prime is 172373231. The next prime is 172373239. The reversal of 172373232 is 232373271.

It is a super-2 number, since 2×172373232² = 59425062220251648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172373232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172373231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125413 + ... + 126779.

Almost surely, 2^172373232 is an apocalyptic number.

172373232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172373232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232056576).

172373232 is an abundant number, since it is smaller than the sum of its proper divisors (291739920).

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

172373232 is a wasteful number, since it uses less digits than its factorization.

172373232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1480 counting only the distinct ones).

The product of its digits is 10584, while the sum is 30.

The square root of 172373232 is about 13129.0986743188. The cubic root of 172373232 is about 556.5317446245.

The spelling of 172373232 in words is "one hundred seventy-two million, three hundred seventy-three thousand, two hundred thirty-two".