172613730 has 32 divisors (see below), whose sum is σ = 414624384. Its totient is φ = 45991296.

The previous prime is 172613729. The next prime is 172613773. The reversal of 172613730 is 37316271.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58347 + ... + 61233.

It is an arithmetic number, because the mean of its divisors is an integer number (12957012).

Almost surely, 2^172613730 is an apocalyptic number.

172613730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172613730 is an abundant number, since it is smaller than the sum of its proper divisors (242010654).

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

172613730 is a wasteful number, since it uses less digits than its factorization.

172613730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 172613730 is about 13138.2544502685. The cubic root of 172613730 is about 556.7904517928.

The spelling of 172613730 in words is "one hundred seventy-two million, six hundred thirteen thousand, seven hundred thirty".