28307740023 has 24 divisors (see below), whose sum is σ = 41007526560. Its totient is φ = 18817189440.

The previous prime is 28307740001. The next prime is 28307740031. The reversal of 28307740023 is 32004770382.

It is not a de Polignac number, because 28307740023 - 2⁵ = 28307739991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28307740023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28307740073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4927933 + ... + 4933673.

It is an arithmetic number, because the mean of its divisors is an integer number (1708646940).

Almost surely, 2^28307740023 is an apocalyptic number.

28307740023 is a deficient number, since it is larger than the sum of its proper divisors (12699786537).

28307740023 is a wasteful number, since it uses less digits than its factorization.

28307740023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239 (or 7236 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 28307740023 in words is "twenty-eight billion, three hundred seven million, seven hundred forty thousand, twenty-three".