253439874 has 32 divisors (see below), whose sum is σ = 582624000. Its totient is φ = 81566352.

The previous prime is 253439873. The next prime is 253439887. The reversal of 253439874 is 478934352.

253439874 is a `hidden beast` number, since 2 + 534 + 39 + 87 + 4 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253439873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79354 + ... + 82485.

It is an arithmetic number, because the mean of its divisors is an integer number (18207000).

Almost surely, 2^253439874 is an apocalyptic number.

253439874 is an abundant number, since it is smaller than the sum of its proper divisors (329184126).

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

253439874 is a wasteful number, since it uses less digits than its factorization.

253439874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161879 (or 161873 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 253439874 is about 15919.7950363690. The cubic root of 253439874 is about 632.8366866037.

The spelling of 253439874 in words is "two hundred fifty-three million, four hundred thirty-nine thousand, eight hundred seventy-four".