28766002690 has 16 divisors (see below), whose sum is σ = 51817848192. Its totient is φ = 11497724784.

The previous prime is 28766002673. The next prime is 28766002703. The reversal of 28766002690 is 9620066782.

It is a happy number.

It is a super-2 number, since 2×28766002690² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28766002690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070604 + ... + 1097143.

It is an arithmetic number, because the mean of its divisors is an integer number (3238615512).

Almost surely, 2^28766002690 is an apocalyptic number.

28766002690 is a deficient number, since it is larger than the sum of its proper divisors (23051845502).

28766002690 is a wasteful number, since it uses less digits than its factorization.

28766002690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169081.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 28766002690 in words is "twenty-eight billion, seven hundred sixty-six million, two thousand, six hundred ninety".