172207296 has 98 divisors (see below), whose sum is σ = 512490212. Its totient is φ = 57386880.

The previous prime is 172207289. The next prime is 172207309. The reversal of 172207296 is 692702271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 172207296.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 44811 + ... + 48501.

Almost surely, 2^172207296 is an apocalyptic number.

172207296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172207296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256245106).

172207296 is an abundant number, since it is smaller than the sum of its proper divisors (340282916).

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

172207296 is an frugal number, since it uses more digits than its factorization.

172207296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3696 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 172207296 is about 13122.7777547286. Note that the first 4 decimals coincide. The cubic root of 172207296 is about 556.3531045506.

The spelling of 172207296 in words is "one hundred seventy-two million, two hundred seven thousand, two hundred ninety-six".