253743804 has 72 divisors (see below), whose sum is σ = 665333760. Its totient is φ = 81453600.

The previous prime is 253743781. The next prime is 253743811. The reversal of 253743804 is 408347352.

It is a happy number.

253743804 is a `hidden beast` number, since 2 + 537 + 43 + 80 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302017 + ... + 302855.

Almost surely, 2^253743804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253743804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332666880).

253743804 is an abundant number, since it is smaller than the sum of its proper divisors (411589956).

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

253743804 is a wasteful number, since it uses less digits than its factorization.

253743804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 253743804 is about 15929.3378393454. The cubic root of 253743804 is about 633.0895555480.

The spelling of 253743804 in words is "two hundred fifty-three million, seven hundred forty-three thousand, eight hundred four".