275115428 has 12 divisors (see below), whose sum is σ = 550230912. Its totient is φ = 117906600.

The previous prime is 275115413. The next prime is 275115433. The reversal of 275115428 is 824511572.

275115428 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4912748 + ... + 4912803.

It is an arithmetic number, because the mean of its divisors is an integer number (45852576).

Almost surely, 2^275115428 is an apocalyptic number.

275115428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

275115428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

275115428 is a wasteful number, since it uses less digits than its factorization.

275115428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9825562 (or 9825560 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 275115428 is about 16586.6038717997. The cubic root of 275115428 is about 650.3866953469.

The spelling of 275115428 in words is "two hundred seventy-five million, one hundred fifteen thousand, four hundred twenty-eight".