172424328 has 48 divisors (see below), whose sum is σ = 436439280. Its totient is φ = 56766336.

The previous prime is 172424303. The next prime is 172424377. The reversal of 172424328 is 823424271.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 189651 + ... + 190557.

It is an arithmetic number, because the mean of its divisors is an integer number (9092485).

Almost surely, 2^172424328 is an apocalyptic number.

It is an amenable number.

172424328 is an abundant number, since it is smaller than the sum of its proper divisors (264014952).

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

172424328 is an equidigital number, since it uses as much as digits as its factorization.

172424328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1001 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 172424328 is about 13131.0444367537. The cubic root of 172424328 is about 556.5867294509.

Adding to 172424328 its reverse (823424271), we get a palindrome (995848599).

It can be divided in two parts, 1724243 and 28, that added together give a palindrome (1724271).

The spelling of 172424328 in words is "one hundred seventy-two million, four hundred twenty-four thousand, three hundred twenty-eight".