275639140 has 48 divisors (see below), whose sum is σ = 663207552. Its totient is φ = 94265856.

The previous prime is 275639131. The next prime is 275639183. The reversal of 275639140 is 41936572.

It is a self number, because there is not a number n which added to its sum of digits gives 275639140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58347 + ... + 62893.

It is an arithmetic number, because the mean of its divisors is an integer number (13816824).

Almost surely, 2^275639140 is an apocalyptic number.

275639140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275639140 is an abundant number, since it is smaller than the sum of its proper divisors (387568412).

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

275639140 is a wasteful number, since it uses less digits than its factorization.

275639140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996 (or 4994 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 275639140 is about 16602.3835638140. The cubic root of 275639140 is about 650.7991275820.

The spelling of 275639140 in words is "two hundred seventy-five million, six hundred thirty-nine thousand, one hundred forty".