172564340 has 24 divisors (see below), whose sum is σ = 390261480. Its totient is φ = 63715968.

The previous prime is 172564333. The next prime is 172564363. The reversal of 172564340 is 43465271.

172564340 is digitally balanced in base 2, 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 4 ways, for example, as 14961424 + 157602916 = 3868^2 + 12554^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172564297 and 172564306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331595 + ... + 332114.

It is an arithmetic number, because the mean of its divisors is an integer number (16260895).

Almost surely, 2^172564340 is an apocalyptic number.

172564340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172564340 is an abundant number, since it is smaller than the sum of its proper divisors (217697140).

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

172564340 is a wasteful number, since it uses less digits than its factorization.

172564340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663731 (or 663729 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 172564340 is about 13136.3746901495. The cubic root of 172564340 is about 556.7373418738.

The spelling of 172564340 in words is "one hundred seventy-two million, five hundred sixty-four thousand, three hundred forty".