172295816 has 64 divisors (see below), whose sum is σ = 426487680. Its totient is φ = 63175680.

The previous prime is 172295813. The next prime is 172295869. The reversal of 172295816 is 618592271.

It is a super-2 number, since 2×172295816² = 59371696422211712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172295813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2246 + ... + 18698.

It is an arithmetic number, because the mean of its divisors is an integer number (6663870).

Almost surely, 2^172295816 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 172295816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213243840).

172295816 is an abundant number, since it is smaller than the sum of its proper divisors (254191864).

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

172295816 is a wasteful number, since it uses less digits than its factorization.

172295816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16494 (or 16490 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 172295816 is about 13126.1500829451. The cubic root of 172295816 is about 556.4484159223.

The spelling of 172295816 in words is "one hundred seventy-two million, two hundred ninety-five thousand, eight hundred sixteen".