172316408 has 32 divisors (see below), whose sum is σ = 355062960. Its totient is φ = 77748480.

The previous prime is 172316393. The next prime is 172316447. The reversal of 172316408 is 804613271.

172316408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4910 + ... + 19202.

Almost surely, 2^172316408 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 172316408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177531480).

172316408 is an abundant number, since it is smaller than the sum of its proper divisors (182746552).

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

172316408 is a wasteful number, since it uses less digits than its factorization.

172316408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14447 (or 14443 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 172316408 is about 13126.9344479204. The cubic root of 172316408 is about 556.4705830873.

Adding to 172316408 its reverse (804613271), we get a palindrome (976929679).

The spelling of 172316408 in words is "one hundred seventy-two million, three hundred sixteen thousand, four hundred eight".