253697488 has 20 divisors (see below), whose sum is σ = 536224608. Its totient is φ = 115316960.

The previous prime is 253697473. The next prime is 253697491. The reversal of 253697488 is 884796352.

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, 720556 + ... + 720907.

Almost surely, 2^253697488 is an apocalyptic number.

It is an amenable number.

253697488 is an abundant number, since it is smaller than the sum of its proper divisors (282527120).

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

253697488 is a wasteful number, since it uses less digits than its factorization.

253697488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441482 (or 1441476 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The square root of 253697488 is about 15927.8839774780. The cubic root of 253697488 is about 633.0510338060.

The spelling of 253697488 in words is "two hundred fifty-three million, six hundred ninety-seven thousand, four hundred eighty-eight".