28702023867 has 16 divisors (see below), whose sum is σ = 46387109760. Its totient is φ = 17395165800.

The previous prime is 28702023859. The next prime is 28702023871. The reversal of 28702023867 is 76832020782.

It is not a de Polignac number, because 28702023867 - 2³ = 28702023859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28702023877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48319609 + ... + 48320202.

It is an arithmetic number, because the mean of its divisors is an integer number (2899194360).

Almost surely, 2^28702023867 is an apocalyptic number.

28702023867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28702023867 is a deficient number, since it is larger than the sum of its proper divisors (17685085893).

28702023867 is a wasteful number, since it uses less digits than its factorization.

28702023867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96639831 (or 96639825 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 28702023867 in words is "twenty-eight billion, seven hundred two million, twenty-three thousand, eight hundred sixty-seven".