275440290 has 32 divisors (see below), whose sum is σ = 699943680. Its totient is φ = 69129984.

The previous prime is 275440271. The next prime is 275440303. The reversal of 275440290 is 92044572.

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, 269530 + ... + 270549.

It is an arithmetic number, because the mean of its divisors is an integer number (21873240).

Almost surely, 2^275440290 is an apocalyptic number.

275440290 is an abundant number, since it is smaller than the sum of its proper divisors (424503390).

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

275440290 is a wasteful number, since it uses less digits than its factorization.

275440290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540106.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 275440290 is about 16596.3938854198. The cubic root of 275440290 is about 650.6425913480.

The spelling of 275440290 in words is "two hundred seventy-five million, four hundred forty thousand, two hundred ninety".