172902244928 has 112 divisors (see below), whose sum is σ = 395034845184. Its totient is φ = 73551014400.

The previous prime is 172902244927. The next prime is 172902244967. The reversal of 172902244928 is 829442209271.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×172902244928² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172902244927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73542953 + ... + 73545303.

It is an arithmetic number, because the mean of its divisors is an integer number (3527096832).

Almost surely, 2^172902244928 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 172902244928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197517422592).

172902244928 is an abundant number, since it is smaller than the sum of its proper divisors (222132600256).

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

172902244928 is a wasteful number, since it uses less digits than its factorization.

172902244928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520 (or 3510 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 172902244928 in words is "one hundred seventy-two billion, nine hundred two million, two hundred forty-four thousand, nine hundred twenty-eight".