172472958 has 48 divisors (see below), whose sum is σ = 432506880. Its totient is φ = 48651408.

The previous prime is 172472903. The next prime is 172472959. The reversal of 172472958 is 859274271.

It is a happy number.

172472958 is a `hidden beast` number, since 172 + 472 + 9 + 5 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172472959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1291 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (9010560).

Almost surely, 2^172472958 is an apocalyptic number.

172472958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172472958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216253440).

172472958 is an abundant number, since it is smaller than the sum of its proper divisors (260033922).

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

172472958 is a wasteful number, since it uses less digits than its factorization.

172472958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17421 (or 17418 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 172472958 is about 13132.8960248682. The cubic root of 172472958 is about 556.6390505063.

The spelling of 172472958 in words is "one hundred seventy-two million, four hundred seventy-two thousand, nine hundred fifty-eight".