253745744 has 20 divisors (see below), whose sum is σ = 561865824. Its totient is φ = 108748128.

The previous prime is 253745731. The next prime is 253745747. The reversal of 253745744 is 447547352.

It is a super-2 number, since 2×253745744² = 128773805196227072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253745747) 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, 1132682 + ... + 1132905.

Almost surely, 2^253745744 is an apocalyptic number.

It is an amenable number.

253745744 is an abundant number, since it is smaller than the sum of its proper divisors (308120080).

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

253745744 is a wasteful number, since it uses less digits than its factorization.

253745744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265602 (or 2265596 counting only the distinct ones).

The product of its digits is 470400, while the sum is 41.

The square root of 253745744 is about 15929.3987331600. The cubic root of 253745744 is about 633.0911689741.

The spelling of 253745744 in words is "two hundred fifty-three million, seven hundred forty-five thousand, seven hundred forty-four".