28265828 has 12 divisors (see below), whose sum is σ = 49544880. Its totient is φ = 14110152.

The previous prime is 28265821. The next prime is 28265833. The reversal of 28265828 is 82856282.

It is not an unprimeable number, because it can be changed into a prime (28265821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2726 + ... + 7997.

It is an arithmetic number, because the mean of its divisors is an integer number (4128740).

Almost surely, 2^28265828 is an apocalyptic number.

It is an amenable number.

28265828 is a deficient number, since it is larger than the sum of its proper divisors (21279052).

28265828 is a wasteful number, since it uses less digits than its factorization.

28265828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11386 (or 11384 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 28265828 is about 5316.5616708546. The cubic root of 28265828 is about 304.6168367693.

The spelling of 28265828 in words is "twenty-eight million, two hundred sixty-five thousand, eight hundred twenty-eight".