247247272 has 24 divisors (see below), whose sum is σ = 480138750. Its totient is φ = 119357504.

The previous prime is 247247257. The next prime is 247247281. The reversal of 247247272 is 272742742.

It can be written as a sum of positive squares in 3 ways, for example, as 171452836 + 75794436 = 13094^2 + 8706^2 .

It is a super-2 number, since 2×247247272² = 122262427022883968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11647 + ... + 25102.

Almost surely, 2^247247272 is an apocalyptic number.

It is an amenable number.

247247272 is a deficient number, since it is larger than the sum of its proper divisors (232891478).

247247272 is a wasteful number, since it uses less digits than its factorization.

247247272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36813 (or 36780 counting only the distinct ones).

The product of its digits is 87808, while the sum is 37.

The square root of 247247272 is about 15724.0984479238. The cubic root of 247247272 is about 627.6398397356.

The spelling of 247247272 in words is "two hundred forty-seven million, two hundred forty-seven thousand, two hundred seventy-two".