253867648 has 16 divisors (see below), whose sum is σ = 505752210. Its totient is φ = 126933760.

The previous prime is 253867637. The next prime is 253867661. The reversal of 253867648 is 846768352.

It can be written as a sum of positive squares in only one way, i.e., 253701184 + 166464 = 15928^2 + 408^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991543 + ... + 991798.

Almost surely, 2^253867648 is an apocalyptic number.

It is an amenable number.

253867648 is a deficient number, since it is larger than the sum of its proper divisors (251884562).

253867648 is an equidigital number, since it uses as much as digits as its factorization.

253867648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983355 (or 1983343 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 253867648 is about 15933.2246579278. The cubic root of 253867648 is about 633.1925355218.

The spelling of 253867648 in words is "two hundred fifty-three million, eight hundred sixty-seven thousand, six hundred forty-eight".