28823870 has 16 divisors (see below), whose sum is σ = 52615008. Its totient is φ = 11366880.

The previous prime is 28823867. The next prime is 28823881. The reversal of 28823870 is 7832882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19589 + ... + 21008.

It is an arithmetic number, because the mean of its divisors is an integer number (3288438).

Almost surely, 2^28823870 is an apocalyptic number.

28823870 is a deficient number, since it is larger than the sum of its proper divisors (23791138).

28823870 is a wasteful number, since it uses less digits than its factorization.

28823870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40675.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 28823870 is about 5368.7866413185. The cubic root of 28823870 is about 306.6084338599.

The spelling of 28823870 in words is "twenty-eight million, eight hundred twenty-three thousand, eight hundred seventy".