247863872 has 14 divisors (see below), whose sum is σ = 491854998. Its totient is φ = 123931904.

The previous prime is 247863871. The next prime is 247863883. The reversal of 247863872 is 278368742.

It can be written as a sum of positive squares in only one way, i.e., 226924096 + 20939776 = 15064^2 + 4576^2 .

It is a super-2 number, since 2×247863872² = 122872998085664768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247863871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936373 + ... + 1936500.

Almost surely, 2^247863872 is an apocalyptic number.

It is an amenable number.

247863872 is a deficient number, since it is larger than the sum of its proper divisors (243991126).

247863872 is an equidigital number, since it uses as much as digits as its factorization.

247863872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872885 (or 3872875 counting only the distinct ones).

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

The square root of 247863872 is about 15743.6930864394. The cubic root of 247863872 is about 628.1611551740.

The spelling of 247863872 in words is "two hundred forty-seven million, eight hundred sixty-three thousand, eight hundred seventy-two".