272293128 has 24 divisors (see below), whose sum is σ = 737460750. Its totient is φ = 90764352.

The previous prime is 272293121. The next prime is 272293163. The reversal of 272293128 is 821392272.

It can be written as a sum of positive squares in only one way, i.e., 271656324 + 636804 = 16482^2 + 798^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a junction number, because it is equal to n+sod(n) for n = 272293092 and 272293101.

It is not an unprimeable number, because it can be changed into a prime (272293121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1890853 + ... + 1890996.

Almost surely, 2^272293128 is an apocalyptic number.

It is an amenable number.

272293128 is an abundant number, since it is smaller than the sum of its proper divisors (465167622).

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

272293128 is a wasteful number, since it uses less digits than its factorization.

272293128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781861 (or 3781854 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 272293128 is about 16501.3068573371. The cubic root of 272293128 is about 648.1550269232.

The spelling of 272293128 in words is "two hundred seventy-two million, two hundred ninety-three thousand, one hundred twenty-eight".