247635252 has 24 divisors (see below), whose sum is σ = 642017600. Its totient is φ = 82545048.

The previous prime is 247635251. The next prime is 247635253. The reversal of 247635252 is 252536742.

247635252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (247635251) and next prime (247635253).

It is a super-2 number, since 2×247635252² = 122646436066207008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247635251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146352 + ... + 1146567.

Almost surely, 2^247635252 is an apocalyptic number.

It is an amenable number.

247635252 is an abundant number, since it is smaller than the sum of its proper divisors (394382348).

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

247635252 is a wasteful number, since it uses less digits than its factorization.

247635252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292932 (or 2292924 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 247635252 is about 15736.4307261844. The cubic root of 247635252 is about 627.9679652882.

The spelling of 247635252 in words is "two hundred forty-seven million, six hundred thirty-five thousand, two hundred fifty-two".