272305428 has 12 divisors (see below), whose sum is σ = 635379360. Its totient is φ = 90768472.

The previous prime is 272305391. The next prime is 272305493. The reversal of 272305428 is 824503272.

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

It is a super-2 number, since 2×272305428² = 148300492236526368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11346048 + ... + 11346071.

It is an arithmetic number, because the mean of its divisors is an integer number (52948280).

Almost surely, 2^272305428 is an apocalyptic number.

It is an amenable number.

272305428 is an abundant number, since it is smaller than the sum of its proper divisors (363073932).

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

272305428 is a wasteful number, since it uses less digits than its factorization.

272305428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22692126 (or 22692124 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 272305428 is about 16501.6795508821. The cubic root of 272305428 is about 648.1647862425.

The spelling of 272305428 in words is "two hundred seventy-two million, three hundred five thousand, four hundred twenty-eight".