253894686 has 16 divisors (see below), whose sum is σ = 507978000. Its totient is φ = 84600128.

The previous prime is 253894649. The next prime is 253894699. The reversal of 253894686 is 686498352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14560 + ... + 26828.

It is an arithmetic number, because the mean of its divisors is an integer number (31748625).

Almost surely, 2^253894686 is an apocalyptic number.

253894686 is an abundant number, since it is smaller than the sum of its proper divisors (254083314).

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

253894686 is a wasteful number, since it uses less digits than its factorization.

253894686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15723.

The product of its digits is 2488320, while the sum is 51.

The square root of 253894686 is about 15934.0731139279. The cubic root of 253894686 is about 633.2150139696.

The spelling of 253894686 in words is "two hundred fifty-three million, eight hundred ninety-four thousand, six hundred eighty-six".