28326816 has 72 divisors (see below), whose sum is σ = 92068704. Its totient is φ = 8092800.

The previous prime is 28326791. The next prime is 28326829. The reversal of 28326816 is 61862382.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5010 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (1278732).

Almost surely, 2^28326816 is an apocalyptic number.

It is an amenable number.

28326816 is an abundant number, since it is smaller than the sum of its proper divisors (63741888).

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

28326816 is a wasteful number, since it uses less digits than its factorization.

28326816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14074 (or 14063 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 28326816 is about 5322.2942421478. The cubic root of 28326816 is about 304.8357657412.

The spelling of 28326816 in words is "twenty-eight million, three hundred twenty-six thousand, eight hundred sixteen".