172330540 has 12 divisors (see below), whose sum is σ = 361894176. Its totient is φ = 68932208.

The previous prime is 172330531. The next prime is 172330549. The reversal of 172330540 is 45033271.

It is an interprime number because it is at equal distance from previous prime (172330531) and next prime (172330549).

It is not an unprimeable number, because it can be changed into a prime (172330549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308244 + ... + 4308283.

It is an arithmetic number, because the mean of its divisors is an integer number (30157848).

Almost surely, 2^172330540 is an apocalyptic number.

172330540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172330540 is an abundant number, since it is smaller than the sum of its proper divisors (189563636).

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

172330540 is a wasteful number, since it uses less digits than its factorization.

172330540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616536 (or 8616534 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 172330540 is about 13127.4727194537. The cubic root of 172330540 is about 556.4857950790.

The spelling of 172330540 in words is "one hundred seventy-two million, three hundred thirty thousand, five hundred forty".