172244876328 has 128 divisors (see below), whose sum is σ = 549198048000. Its totient is φ = 48997820160.

The previous prime is 172244876291. The next prime is 172244876329. The reversal of 172244876328 is 823678442271.

172244876328 is a `hidden beast` number, since 1 + 7 + 2 + 244 + 8 + 76 + 328 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (172244876329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97518 + ... + 594978.

It is an arithmetic number, because the mean of its divisors is an integer number (4290609750).

Almost surely, 2^172244876328 is an apocalyptic number.

172244876328 is a gapful number since it is divisible by the number (18) 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 172244876328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274599024000).

172244876328 is an abundant number, since it is smaller than the sum of its proper divisors (376953171672).

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

172244876328 is a wasteful number, since it uses less digits than its factorization.

172244876328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497712 (or 497702 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 54.

The spelling of 172244876328 in words is "one hundred seventy-two billion, two hundred forty-four million, eight hundred seventy-six thousand, three hundred twenty-eight".