253812 has 24 divisors (see below), whose sum is σ = 638176. Its totient is φ = 78048.

The previous prime is 253811. The next prime is 253819. The reversal of 253812 is 218352.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253812.

It is not an unprimeable number, because it can be changed into a prime (253811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658 + ... + 969.

2²⁵³⁸¹² is an apocalyptic number.

It is an amenable number.

253812 is an abundant number, since it is smaller than the sum of its proper divisors (384364).

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

253812 is a wasteful number, since it uses less digits than its factorization.

253812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647 (or 1645 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 253812 is about 503.7975783983. The cubic root of 253812 is about 63.3146266697.

The spelling of 253812 in words is "two hundred fifty-three thousand, eight hundred twelve".