275745440 has 48 divisors (see below), whose sum is σ = 689775912. Its totient is φ = 103809024.

The previous prime is 275745433. The next prime is 275745443. The reversal of 275745440 is 44547572.

It can be written as a sum of positive squares in 4 ways, for example, as 275161744 + 583696 = 16588^2 + 764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 275745394 and 275745403.

It is not an unprimeable number, because it can be changed into a prime (275745443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47969 + ... + 53408.

Almost surely, 2^275745440 is an apocalyptic number.

275745440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275745440 is an abundant number, since it is smaller than the sum of its proper divisors (414030472).

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

275745440 is a wasteful number, since it uses less digits than its factorization.

275745440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101409 (or 101401 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 38.

The square root of 275745440 is about 16605.5846027775. The cubic root of 275745440 is about 650.8827768732.

The spelling of 275745440 in words is "two hundred seventy-five million, seven hundred forty-five thousand, four hundred forty".