275138472 has 64 divisors (see below), whose sum is σ = 832360320. Its totient is φ = 73986048.

The previous prime is 275138471. The next prime is 275138477. The reversal of 275138472 is 274831572.

It is a self number, because there is not a number n which added to its sum of digits gives 275138472.

It is not an unprimeable number, because it can be changed into a prime (275138471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45313 + ... + 51024.

It is an arithmetic number, because the mean of its divisors is an integer number (13005630).

Almost surely, 2^275138472 is an apocalyptic number.

It is an amenable number.

275138472 is an abundant number, since it is smaller than the sum of its proper divisors (557221848).

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

275138472 is a wasteful number, since it uses less digits than its factorization.

275138472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96370 (or 96366 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 275138472 is about 16587.2985142247. The cubic root of 275138472 is about 650.4048538979.

The spelling of 275138472 in words is "two hundred seventy-five million, one hundred thirty-eight thousand, four hundred seventy-two".