275752720 has 40 divisors (see below), whose sum is σ = 644416344. Its totient is φ = 109734912.

The previous prime is 275752663. The next prime is 275752721. The reversal of 275752720 is 27257572.

It can be written as a sum of positive squares in 4 ways, for example, as 20647936 + 255104784 = 4544^2 + 15972^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 275752720.

It is not an unprimeable number, because it can be changed into a prime (275752721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012 + ... + 24508.

Almost surely, 2^275752720 is an apocalyptic number.

275752720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275752720 is an abundant number, since it is smaller than the sum of its proper divisors (368663624).

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

275752720 is a wasteful number, since it uses less digits than its factorization.

275752720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17707 (or 17701 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 275752720 is about 16605.8038046943. The cubic root of 275752720 is about 650.8885048433. Note that the first 3 decimals are identical.

The spelling of 275752720 in words is "two hundred seventy-five million, seven hundred fifty-two thousand, seven hundred twenty".