172392064 has 64 divisors (see below), whose sum is σ = 372365280. Its totient is φ = 79027200.

The previous prime is 172392049. The next prime is 172392067. The reversal of 172392064 is 460293271.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (172392067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350859 + ... + 351349.

Almost surely, 2^172392064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172392064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186182640).

172392064 is an abundant number, since it is smaller than the sum of its proper divisors (199973216).

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

172392064 is a wasteful number, since it uses less digits than its factorization.

172392064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 172392064 is about 13129.8158402927. The cubic root of 172392064 is about 556.5520111590.

The spelling of 172392064 in words is "one hundred seventy-two million, three hundred ninety-two thousand, sixty-four".