172247430 has 32 divisors (see below), whose sum is σ = 415263744. Its totient is φ = 45724896.

The previous prime is 172247401. The next prime is 172247441. The reversal of 172247430 is 34742271.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6184 + ... + 19563.

It is an arithmetic number, because the mean of its divisors is an integer number (12976992).

Almost surely, 2^172247430 is an apocalyptic number.

172247430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172247430 is an abundant number, since it is smaller than the sum of its proper divisors (243016314).

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

172247430 is a wasteful number, since it uses less digits than its factorization.

172247430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25980.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 172247430 is about 13124.3068388391. The cubic root of 172247430 is about 556.3963217305.

The spelling of 172247430 in words is "one hundred seventy-two million, two hundred forty-seven thousand, four hundred thirty".