172654872 has 64 divisors (see below), whose sum is σ = 479861760. Its totient is φ = 51408000.

The previous prime is 172654871. The next prime is 172654891. The reversal of 172654872 is 278456271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172654871) 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, 747 + ... + 18597.

It is an arithmetic number, because the mean of its divisors is an integer number (7497840).

Almost surely, 2^172654872 is an apocalyptic number.

172654872 is a gapful number since it is divisible by the number (12) 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 172654872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239930880).

172654872 is an abundant number, since it is smaller than the sum of its proper divisors (307206888).

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

172654872 is a wasteful number, since it uses less digits than its factorization.

172654872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17904 (or 17900 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 172654872 is about 13139.8200900926. The cubic root of 172654872 is about 556.8346847613.

The spelling of 172654872 in words is "one hundred seventy-two million, six hundred fifty-four thousand, eight hundred seventy-two".