2447731240 has 32 divisors (see below), whose sum is σ = 5797260000. Its totient is φ = 927561024.

The previous prime is 2447731229. The next prime is 2447731249. The reversal of 2447731240 is 421377442.

It is a junction number, because it is equal to n+sod(n) for n = 2447731196 and 2447731205.

It is not an unprimeable number, because it can be changed into a prime (2447731249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609590 + ... + 1611109.

It is an arithmetic number, because the mean of its divisors is an integer number (181164375).

Almost surely, 2^2447731240 is an apocalyptic number.

2447731240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2447731240 is an abundant number, since it is smaller than the sum of its proper divisors (3349528760).

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

2447731240 is a wasteful number, since it uses less digits than its factorization.

2447731240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3220729 (or 3220725 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 2447731240 is about 49474.5514380878. The cubic root of 2447731240 is about 1347.6834969136.

The spelling of 2447731240 in words is "two billion, four hundred forty-seven million, seven hundred thirty-one thousand, two hundred forty".