253689648 has 20 divisors (see below), whose sum is σ = 655365048. Its totient is φ = 84563200.

The previous prime is 253689643. The next prime is 253689677. The reversal of 253689648 is 846986352.

It is a self number, because there is not a number n which added to its sum of digits gives 253689648.

It is not an unprimeable number, because it can be changed into a prime (253689643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2642553 + ... + 2642648.

Almost surely, 2^253689648 is an apocalyptic number.

It is an amenable number.

253689648 is an abundant number, since it is smaller than the sum of its proper divisors (401675400).

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

253689648 is a wasteful number, since it uses less digits than its factorization.

253689648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285212 (or 5285206 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 253689648 is about 15927.6378663002. The cubic root of 253689648 is about 633.0445126913.

The spelling of 253689648 in words is "two hundred fifty-three million, six hundred eighty-nine thousand, six hundred forty-eight".