253706840 has 16 divisors (see below), whose sum is σ = 570840480. Its totient is φ = 101482720.

The previous prime is 253706833. The next prime is 253706879. The reversal of 253706840 is 48607352.

It is a happy number.

253706840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 253706840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3171296 + ... + 3171375.

It is an arithmetic number, because the mean of its divisors is an integer number (35677530).

Almost surely, 2^253706840 is an apocalyptic number.

253706840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253706840 is an abundant number, since it is smaller than the sum of its proper divisors (317133640).

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

253706840 is a wasteful number, since it uses less digits than its factorization.

253706840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342682 (or 6342678 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 253706840 is about 15928.1775479808. The cubic root of 253706840 is about 633.0588123885.

The spelling of 253706840 in words is "two hundred fifty-three million, seven hundred six thousand, eight hundred forty".