28872963 has 16 divisors (see below), whose sum is σ = 48885760. Its totient is φ = 16498728.

The previous prime is 28872917. The next prime is 28872967. The reversal of 28872963 is 36927882.

It is not a de Polignac number, because 28872963 - 2⁸ = 28872707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28872967) 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, 76195 + ... + 76572.

It is an arithmetic number, because the mean of its divisors is an integer number (3055360).

Almost surely, 2^28872963 is an apocalyptic number.

28872963 is a deficient number, since it is larger than the sum of its proper divisors (20012797).

28872963 is a wasteful number, since it uses less digits than its factorization.

28872963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152783 (or 152777 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28872963 is about 5373.3567720746. The cubic root of 28872963 is about 306.7824076090.

The spelling of 28872963 in words is "twenty-eight million, eight hundred seventy-two thousand, nine hundred sixty-three".