28456963 has 6 divisors (see below), whose sum is σ = 30229676. Its totient is φ = 26782752.

The previous prime is 28456951. The next prime is 28456969. The reversal of 28456963 is 36965482.

It is a de Polignac number, because none of the positive numbers 2^k-28456963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28456969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48945 + ... + 49522.

Almost surely, 2^28456963 is an apocalyptic number.

28456963 is a deficient number, since it is larger than the sum of its proper divisors (1772713).

28456963 is an equidigital number, since it uses as much as digits as its factorization.

28456963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98501 (or 98484 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 28456963 is about 5334.5068188165. The cubic root of 28456963 is about 305.3019065572.

The spelling of 28456963 in words is "twenty-eight million, four hundred fifty-six thousand, nine hundred sixty-three".