172413820 has 12 divisors (see below), whose sum is σ = 362069064. Its totient is φ = 68965520.

The previous prime is 172413817. The next prime is 172413827. The reversal of 172413820 is 28314271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172413827) 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, 4310326 + ... + 4310365.

It is an arithmetic number, because the mean of its divisors is an integer number (30172422).

Almost surely, 2^172413820 is an apocalyptic number.

172413820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172413820 is an abundant number, since it is smaller than the sum of its proper divisors (189655244).

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

172413820 is a wasteful number, since it uses less digits than its factorization.

172413820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8620700 (or 8620698 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 172413820 is about 13130.6443101624. The cubic root of 172413820 is about 556.5754225929.

The spelling of 172413820 in words is "one hundred seventy-two million, four hundred thirteen thousand, eight hundred twenty".