28786231790 has 8 divisors (see below), whose sum is σ = 51815217240. Its totient is φ = 11514492712.

The previous prime is 28786231781. The next prime is 28786231819. The reversal of 28786231790 is 9713268782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439311580 + ... + 1439311599.

It is an arithmetic number, because the mean of its divisors is an integer number (6476902155).

Almost surely, 2^28786231790 is an apocalyptic number.

28786231790 is a deficient number, since it is larger than the sum of its proper divisors (23028985450).

28786231790 is a wasteful number, since it uses less digits than its factorization.

28786231790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878623186.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 28786231790 in words is "twenty-eight billion, seven hundred eighty-six million, two hundred thirty-one thousand, seven hundred ninety".