28986000771 has 16 divisors (see below), whose sum is σ = 47566770944. Its totient is φ = 15289318944.

The previous prime is 28986000737. The next prime is 28986000781. The reversal of 28986000771 is 17700068982.

It is not a de Polignac number, because 28986000771 - 2²⁵ = 28952446339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28986000771.

It is not an unprimeable number, because it can be changed into a prime (28986000731) 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, 53087641 + ... + 53088186.

It is an arithmetic number, because the mean of its divisors is an integer number (2972923184).

Almost surely, 2^28986000771 is an apocalyptic number.

28986000771 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28986000771 is a deficient number, since it is larger than the sum of its proper divisors (18580770173).

28986000771 is a wasteful number, since it uses less digits than its factorization.

28986000771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106175850.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 28986000771 in words is "twenty-eight billion, nine hundred eighty-six million, seven hundred seventy-one", and thus it is an aban number.