4247656872 has 32 divisors (see below), whose sum is σ = 11178045600. Its totient is φ = 1341365184.

The previous prime is 4247656817. The next prime is 4247656877. The reversal of 4247656872 is 2786567424.

It is not an unprimeable number, because it can be changed into a prime (4247656877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4657063 + ... + 4657974.

It is an arithmetic number, because the mean of its divisors is an integer number (349313925).

Almost surely, 2^4247656872 is an apocalyptic number.

It is an amenable number.

4247656872 is an abundant number, since it is smaller than the sum of its proper divisors (6930388728).

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

4247656872 is a wasteful number, since it uses less digits than its factorization.

4247656872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315065 (or 9315061 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 51.

The square root of 4247656872 is about 65174.0506029816. The cubic root of 4247656872 is about 1619.5081664995.

The spelling of 4247656872 in words is "four billion, two hundred forty-seven million, six hundred fifty-six thousand, eight hundred seventy-two".