28130710023 has 32 divisors (see below), whose sum is σ = 45449062400. Its totient is φ = 17092060128.

The previous prime is 28130709979. The next prime is 28130710063. The reversal of 28130710023 is 32001703182.

It is not a de Polignac number, because 28130710023 - 2¹² = 28130705927 is a prime.

It is a super-2 number, since 2×28130710023² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28130710063) 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, 479515 + ... + 534972.

It is an arithmetic number, because the mean of its divisors is an integer number (1420283200).

Almost surely, 2^28130710023 is an apocalyptic number.

28130710023 is a deficient number, since it is larger than the sum of its proper divisors (17318352377).

28130710023 is a wasteful number, since it uses less digits than its factorization.

28130710023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014588 (or 1014582 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 28130710023 in words is "twenty-eight billion, one hundred thirty million, seven hundred ten thousand, twenty-three".