28294977966 has 16 divisors (see below), whose sum is σ = 56677428864. Its totient is φ = 9417080504.

The previous prime is 28294977961. The next prime is 28294977979. The reversal of 28294977966 is 66977949282.

It is a self number, because there is not a number n which added to its sum of digits gives 28294977966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28294977961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3640500 + ... + 3648263.

It is an arithmetic number, because the mean of its divisors is an integer number (3542339304).

Almost surely, 2^28294977966 is an apocalyptic number.

28294977966 is an abundant number, since it is smaller than the sum of its proper divisors (28382450898).

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

28294977966 is a wasteful number, since it uses less digits than its factorization.

28294977966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289415.

The product of its digits is 164602368, while the sum is 69.

The spelling of 28294977966 in words is "twenty-eight billion, two hundred ninety-four million, nine hundred seventy-seven thousand, nine hundred sixty-six".