253718628 has 48 divisors (see below), whose sum is σ = 627083520. Its totient is φ = 79618464.

The previous prime is 253718627. The next prime is 253718629. The reversal of 253718628 is 826817352.

It is an interprime number because it is at equal distance from previous prime (253718627) and next prime (253718629).

It is a self number, because there is not a number n which added to its sum of digits gives 253718628.

It is not an unprimeable number, because it can be changed into a prime (253718623) 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, 33751 + ... + 40577.

It is an arithmetic number, because the mean of its divisors is an integer number (13064240).

Almost surely, 2^253718628 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 253718628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313541760).

253718628 is an abundant number, since it is smaller than the sum of its proper divisors (373364892).

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

253718628 is a wasteful number, since it uses less digits than its factorization.

253718628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016 (or 7014 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 253718628 is about 15928.5475797387. The cubic root of 253718628 is about 633.0686168564.

The spelling of 253718628 in words is "two hundred fifty-three million, seven hundred eighteen thousand, six hundred twenty-eight".