253647480 has 64 divisors (see below), whose sum is σ = 805710240. Its totient is φ = 63660032.

The previous prime is 253647467. The next prime is 253647509. The reversal of 253647480 is 84746352.

It is a happy number.

It is a super-2 number, since 2×253647480² = 128674088220700800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60129 + ... + 64208.

Almost surely, 2^253647480 is an apocalyptic number.

253647480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253647480 is an abundant number, since it is smaller than the sum of its proper divisors (552062760).

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

253647480 is a wasteful number, since it uses less digits than its factorization.

253647480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124368 (or 124364 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 253647480 is about 15926.3140745120. The cubic root of 253647480 is about 633.0094361054.

The spelling of 253647480 in words is "two hundred fifty-three million, six hundred forty-seven thousand, four hundred eighty".