275640398 has 16 divisors (see below), whose sum is σ = 452992176. Its totient is φ = 124751040.

The previous prime is 275640317. The next prime is 275640433. The reversal of 275640398 is 893046572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21761 + ... + 32012.

It is an arithmetic number, because the mean of its divisors is an integer number (28312011).

Almost surely, 2^275640398 is an apocalyptic number.

275640398 is a deficient number, since it is larger than the sum of its proper divisors (177351778).

275640398 is a wasteful number, since it uses less digits than its factorization.

275640398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54019.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 275640398 is about 16602.4214498970. The cubic root of 275640398 is about 650.8001176495.

The spelling of 275640398 in words is "two hundred seventy-five million, six hundred forty thousand, three hundred ninety-eight".