247944872 has 16 divisors (see below), whose sum is σ = 531310560. Its totient is φ = 106262064.

The previous prime is 247944857. The next prime is 247944877. The reversal of 247944872 is 278449742.

It is a super-2 number, since 2×247944872² = 122953319102192768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247944877) 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, 2213738 + ... + 2213849.

It is an arithmetic number, because the mean of its divisors is an integer number (33206910).

Almost surely, 2^247944872 is an apocalyptic number.

It is an amenable number.

247944872 is an abundant number, since it is smaller than the sum of its proper divisors (283365688).

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

247944872 is a wasteful number, since it uses less digits than its factorization.

247944872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427600 (or 4427596 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 247944872 is about 15746.2653349929. The cubic root of 247944872 is about 628.2295737938.

The spelling of 247944872 in words is "two hundred forty-seven million, nine hundred forty-four thousand, eight hundred seventy-two".