2447128660 has 12 divisors (see below), whose sum is σ = 5138970228. Its totient is φ = 978851456.

The previous prime is 2447128657. The next prime is 2447128679. The reversal of 2447128660 is 668217442.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 328551876 + 2118576784 = 18126^2 + 46028^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61178197 + ... + 61178236.

It is an arithmetic number, because the mean of its divisors is an integer number (428247519).

Almost surely, 2^2447128660 is an apocalyptic number.

2447128660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2447128660 is an abundant number, since it is smaller than the sum of its proper divisors (2691841568).

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

2447128660 is a wasteful number, since it uses less digits than its factorization.

2447128660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122356442 (or 122356440 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 2447128660 is about 49468.4612657398. The cubic root of 2447128660 is about 1347.5728973842.

The spelling of 2447128660 in words is "two billion, four hundred forty-seven million, one hundred twenty-eight thousand, six hundred sixty".