253968630 has 64 divisors (see below), whose sum is σ = 647447040. Its totient is φ = 63576576.

The previous prime is 253968619. The next prime is 253968667. The reversal of 253968630 is 36869352.

253968630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62439 + ... + 66381.

It is an arithmetic number, because the mean of its divisors is an integer number (10116360).

Almost surely, 2^253968630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253968630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323723520).

253968630 is an abundant number, since it is smaller than the sum of its proper divisors (393478410).

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

253968630 is a wasteful number, since it uses less digits than its factorization.

253968630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 253968630 is about 15936.3932556899. The cubic root of 253968630 is about 633.2764802767.

The spelling of 253968630 in words is "two hundred fifty-three million, nine hundred sixty-eight thousand, six hundred thirty".