172455828 has 12 divisors (see below), whose sum is σ = 402396960. Its totient is φ = 57485272.

The previous prime is 172455827. The next prime is 172455839. The reversal of 172455828 is 828554271.

172455828 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×172455828² = 59482025222331168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172455828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172455827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7185648 + ... + 7185671.

It is an arithmetic number, because the mean of its divisors is an integer number (33533080).

Almost surely, 2^172455828 is an apocalyptic number.

It is an amenable number.

172455828 is an abundant number, since it is smaller than the sum of its proper divisors (229941132).

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

172455828 is a wasteful number, since it uses less digits than its factorization.

172455828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14371326 (or 14371324 counting only the distinct ones).

The product of its digits is 179200, while the sum is 42.

The square root of 172455828 is about 13132.2438295974. The cubic root of 172455828 is about 556.6206214479.

The spelling of 172455828 in words is "one hundred seventy-two million, four hundred fifty-five thousand, eight hundred twenty-eight".