172233256 has 64 divisors (see below), whose sum is σ = 374507280. Its totient is φ = 73543680.

The previous prime is 172233253. The next prime is 172233277. The reversal of 172233256 is 652332271.

It can be written as a sum of positive squares in 8 ways, for example, as 12716356 + 159516900 = 3566^2 + 12630^2 .

It is not an unprimeable number, because it can be changed into a prime (172233253) 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, 107050 + ... + 108646.

Almost surely, 2^172233256 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 172233256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187253640).

172233256 is an abundant number, since it is smaller than the sum of its proper divisors (202274024).

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

172233256 is a wasteful number, since it uses less digits than its factorization.

172233256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1690 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 172233256 is about 13123.7668373070. The cubic root of 172233256 is about 556.3810596203.

The spelling of 172233256 in words is "one hundred seventy-two million, two hundred thirty-three thousand, two hundred fifty-six".