172400958 has 12 divisors (see below), whose sum is σ = 373535448. Its totient is φ = 57466980.

The previous prime is 172400957. The next prime is 172400959. The reversal of 172400958 is 859004271.

It is an interprime number because it is at equal distance from previous prime (172400957) and next prime (172400959).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172400953) 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 5 ways as a sum of consecutive naturals, for example, 4788898 + ... + 4788933.

It is an arithmetic number, because the mean of its divisors is an integer number (31127954).

Almost surely, 2^172400958 is an apocalyptic number.

172400958 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

172400958 is an abundant number, since it is smaller than the sum of its proper divisors (201134490).

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

172400958 is a wasteful number, since it uses less digits than its factorization.

172400958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9577839 (or 9577836 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 172400958 is about 13130.1545306976. The cubic root of 172400958 is about 556.5615821496.

The spelling of 172400958 in words is "one hundred seventy-two million, four hundred thousand, nine hundred fifty-eight".