2447791256 has 16 divisors (see below), whose sum is σ = 4590240000. Its totient is φ = 1223727264.

The previous prime is 2447791253. The next prime is 2447791259. The reversal of 2447791256 is 6521977442.

It is an interprime number because it is at equal distance from previous prime (2447791253) and next prime (2447791259).

It is a self number, because there is not a number n which added to its sum of digits gives 2447791256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2447791253) 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, 58370 + ... + 91118.

It is an arithmetic number, because the mean of its divisors is an integer number (286890000).

Almost surely, 2^2447791256 is an apocalyptic number.

It is an amenable number.

2447791256 is a deficient number, since it is larger than the sum of its proper divisors (2142448744).

2447791256 is a wasteful number, since it uses less digits than its factorization.

2447791256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42098 (or 42094 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 2447791256 is about 49475.1579684189. The cubic root of 2447791256 is about 1347.6945114551.

The spelling of 2447791256 in words is "two billion, four hundred forty-seven million, seven hundred ninety-one thousand, two hundred fifty-six".