28323786 has 16 divisors (see below), whose sum is σ = 56728224. Its totient is φ = 9427824.

The previous prime is 28323767. The next prime is 28323797. The reversal of 28323786 is 68732382.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821 + ... + 7743.

It is an arithmetic number, because the mean of its divisors is an integer number (3545514).

Almost surely, 2^28323786 is an apocalyptic number.

28323786 is an abundant number, since it is smaller than the sum of its proper divisors (28404438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28323786 is a wasteful number, since it uses less digits than its factorization.

28323786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725.

The product of its digits is 96768, while the sum is 39.

The square root of 28323786 is about 5322.0095828550. The cubic root of 28323786 is about 304.8248963551.

The spelling of 28323786 in words is "twenty-eight million, three hundred twenty-three thousand, seven hundred eighty-six".