172413440 has 40 divisors (see below), whose sum is σ = 413394300. Its totient is φ = 68964352.

The previous prime is 172413431. The next prime is 172413443. The reversal of 172413440 is 44314271.

172413440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 139051264 + 33362176 = 11792^2 + 5776^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (172413443) 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, 31115 + ... + 36234.

Almost surely, 2^172413440 is an apocalyptic number.

172413440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172413440 is an abundant number, since it is smaller than the sum of its proper divisors (240980860).

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

172413440 is an frugal number, since it uses more digits than its factorization.

172413440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67372 (or 67356 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 172413440 is about 13130.6298401866. The cubic root of 172413440 is about 556.5750136953.

The spelling of 172413440 in words is "one hundred seventy-two million, four hundred thirteen thousand, four hundred forty".