172358540 has 12 divisors (see below), whose sum is σ = 361952976. Its totient is φ = 68943408.

The previous prime is 172358533. The next prime is 172358567. The reversal of 172358540 is 45853271.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 172358540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308944 + ... + 4308983.

It is an arithmetic number, because the mean of its divisors is an integer number (30162748).

Almost surely, 2^172358540 is an apocalyptic number.

172358540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172358540 is an abundant number, since it is smaller than the sum of its proper divisors (189594436).

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

172358540 is a wasteful number, since it uses less digits than its factorization.

172358540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8617936 (or 8617934 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 172358540 is about 13128.5391418848. The cubic root of 172358540 is about 556.5159324310.

The spelling of 172358540 in words is "one hundred seventy-two million, three hundred fifty-eight thousand, five hundred forty".