172430832 has 80 divisors (see below), whose sum is σ = 511911680. Its totient is φ = 48992256.

The previous prime is 172430831. The next prime is 172430837. The reversal of 172430832 is 238034271.

It is a self number, because there is not a number n which added to its sum of digits gives 172430832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172430831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63519 + ... + 66177.

It is an arithmetic number, because the mean of its divisors is an integer number (6398896).

Almost surely, 2^172430832 is an apocalyptic number.

172430832 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 172430832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255955840).

172430832 is an abundant number, since it is smaller than the sum of its proper divisors (339480848).

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

172430832 is a wasteful number, since it uses less digits than its factorization.

172430832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 172430832 is about 13131.2920917936. The cubic root of 172430832 is about 556.5937276795.

The spelling of 172430832 in words is "one hundred seventy-two million, four hundred thirty thousand, eight hundred thirty-two".