247986472 has 32 divisors (see below), whose sum is σ = 475226280. Its totient is φ = 121282560.

The previous prime is 247986467. The next prime is 247986521. The reversal of 247986472 is 274689742.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69122596 + 178863876 = 8314^2 + 13374^2 .

It is a super-2 number, since 2×247986472² = 122994580590013568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92868 + ... + 95500.

Almost surely, 2^247986472 is an apocalyptic number.

It is an amenable number.

247986472 is a deficient number, since it is larger than the sum of its proper divisors (227239808).

247986472 is a wasteful number, since it uses less digits than its factorization.

247986472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893 (or 2889 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 247986472 is about 15747.5862277366. The cubic root of 247986472 is about 628.2647064540.

The spelling of 247986472 in words is "two hundred forty-seven million, nine hundred eighty-six thousand, four hundred seventy-two".