28130487297 has 32 divisors (see below), whose sum is σ = 44072286720. Its totient is φ = 15775845120.

The previous prime is 28130487233. The next prime is 28130487353. The reversal of 28130487297 is 79278403182.

It is not a de Polignac number, because 28130487297 - 2⁶ = 28130487233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28130487227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 494728 + ... + 548649.

It is an arithmetic number, because the mean of its divisors is an integer number (1377258960).

Almost surely, 2^28130487297 is an apocalyptic number.

It is an amenable number.

28130487297 is a deficient number, since it is larger than the sum of its proper divisors (15941799423).

28130487297 is a wasteful number, since it uses less digits than its factorization.

28130487297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043453.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 28130487297 in words is "twenty-eight billion, one hundred thirty million, four hundred eighty-seven thousand, two hundred ninety-seven".