272438172 has 36 divisors (see below), whose sum is σ = 690384240. Its totient is φ = 90585792.

The previous prime is 272438149. The next prime is 272438189. The reversal of 272438172 is 271834272.

272438172 is a `hidden beast` number, since 272 + 4 + 381 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5473 + ... + 23975.

It is an arithmetic number, because the mean of its divisors is an integer number (19177340).

Almost surely, 2^272438172 is an apocalyptic number.

It is an amenable number.

272438172 is an abundant number, since it is smaller than the sum of its proper divisors (417946068).

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

272438172 is a wasteful number, since it uses less digits than its factorization.

272438172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18922 (or 18917 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 272438172 is about 16505.7011968592. The cubic root of 272438172 is about 648.2700920259.

The spelling of 272438172 in words is "two hundred seventy-two million, four hundred thirty-eight thousand, one hundred seventy-two".