28928835 has 24 divisors (see below), whose sum is σ = 54001584. Its totient is φ = 14241600.

The previous prime is 28928833. The next prime is 28928843. The reversal of 28928835 is 53882982.

It is not a de Polignac number, because 28928835 - 2¹ = 28928833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (28928833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24141 + ... + 25310.

It is an arithmetic number, because the mean of its divisors is an integer number (2250066).

Almost surely, 2^28928835 is an apocalyptic number.

28928835 is a deficient number, since it is larger than the sum of its proper divisors (25072749).

28928835 is a wasteful number, since it uses less digits than its factorization.

28928835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49475 (or 49472 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 28928835 is about 5378.5532441355. The cubic root of 28928835 is about 306.9801647326.

The spelling of 28928835 in words is "twenty-eight million, nine hundred twenty-eight thousand, eight hundred thirty-five".