28965260956 has 48 divisors (see below), whose sum is σ = 54363810816. Its totient is φ = 13471533504.

The previous prime is 28965260953. The next prime is 28965260957. The reversal of 28965260956 is 65906256982.

It is a happy number.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28965260956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965260953) 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, 657535 + ... + 700201.

It is an arithmetic number, because the mean of its divisors is an integer number (1132579392).

Almost surely, 2^28965260956 is an apocalyptic number.

It is an amenable number.

28965260956 is a deficient number, since it is larger than the sum of its proper divisors (25398549860).

28965260956 is a wasteful number, since it uses less digits than its factorization.

28965260956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42898 (or 42896 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 28965260956 in words is "twenty-eight billion, nine hundred sixty-five million, two hundred sixty thousand, nine hundred fifty-six".