253285438 has 32 divisors (see below), whose sum is σ = 449906688. Its totient is φ = 104652000.

The previous prime is 253285433. The next prime is 253285441. The reversal of 253285438 is 834582352.

It is a self number, because there is not a number n which added to its sum of digits gives 253285438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253285433) 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, 132288 + ... + 134188.

It is an arithmetic number, because the mean of its divisors is an integer number (14059584).

Almost surely, 2^253285438 is an apocalyptic number.

253285438 is a deficient number, since it is larger than the sum of its proper divisors (196621250).

253285438 is a wasteful number, since it uses less digits than its factorization.

253285438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248.

The product of its digits is 230400, while the sum is 40.

The square root of 253285438 is about 15914.9438578966. The cubic root of 253285438 is about 632.7081187989.

The spelling of 253285438 in words is "two hundred fifty-three million, two hundred eighty-five thousand, four hundred thirty-eight".