28847440313 has 8 divisors (see below), whose sum is σ = 29720573832. Its totient is φ = 27979226496.

The previous prime is 28847440261. The next prime is 28847440339. The reversal of 28847440313 is 31304474882.

It can be written as a sum of positive squares in 4 ways, for example, as 795664 + 28846644649 = 892^2 + 169843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28847440313 - 2¹⁰ = 28847439289 is a prime.

It is a super-2 number, since 2×28847440313² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28847440393) 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, 1218020 + ... + 1241477.

It is an arithmetic number, because the mean of its divisors is an integer number (3715071729).

Almost surely, 2^28847440313 is an apocalyptic number.

It is an amenable number.

28847440313 is a deficient number, since it is larger than the sum of its proper divisors (873133519).

28847440313 is a wasteful number, since it uses less digits than its factorization.

28847440313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459851.

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 28847440313 in words is "twenty-eight billion, eight hundred forty-seven million, four hundred forty thousand, three hundred thirteen".