172536432 has 80 divisors (see below), whose sum is σ = 469041408. Its totient is φ = 54545920.

The previous prime is 172536431. The next prime is 172536437. The reversal of 172536432 is 234635271.

It is a junction number, because it is equal to n+sod(n) for n = 172536393 and 172536402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172536431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144028 + ... + 145220.

Almost surely, 2^172536432 is an apocalyptic number.

172536432 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 172536432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234520704).

172536432 is an abundant number, since it is smaller than the sum of its proper divisors (296504976).

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

172536432 is a wasteful number, since it uses less digits than its factorization.

172536432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1352 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 172536432 is about 13135.3124058775. The cubic root of 172536432 is about 556.7073274390.

The spelling of 172536432 in words is "one hundred seventy-two million, five hundred thirty-six thousand, four hundred thirty-two".