28833990666 has 48 divisors (see below), whose sum is σ = 65972099424. Its totient is φ = 8350108416.

The previous prime is 28833990659. The next prime is 28833990673. The reversal of 28833990666 is 66609933882.

It is an interprime number because it is at equal distance from previous prime (28833990659) and next prime (28833990673).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 617020 + ... + 662103.

It is an arithmetic number, because the mean of its divisors is an integer number (1374418738).

Almost surely, 2^28833990666 is an apocalyptic number.

28833990666 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28833990666 is an abundant number, since it is smaller than the sum of its proper divisors (37138108758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28833990666 is a wasteful number, since it uses less digits than its factorization.

28833990666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279175 (or 1279158 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 28833990666 in words is "twenty-eight billion, eight hundred thirty-three million, nine hundred ninety thousand, six hundred sixty-six".