28700972485 has 16 divisors (see below), whose sum is σ = 34591224960. Its totient is φ = 22860850240.

The previous prime is 28700972473. The next prime is 28700972507. The reversal of 28700972485 is 58427900782.

It is a happy number.

It is not a de Polignac number, because 28700972485 - 2⁵ = 28700972453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2429904 + ... + 2441686.

It is an arithmetic number, because the mean of its divisors is an integer number (2161951560).

Almost surely, 2^28700972485 is an apocalyptic number.

It is an amenable number.

28700972485 is a deficient number, since it is larger than the sum of its proper divisors (5890252475).

28700972485 is a wasteful number, since it uses less digits than its factorization.

28700972485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13868.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 28700972485 in words is "twenty-eight billion, seven hundred million, nine hundred seventy-two thousand, four hundred eighty-five".