28026684 has 36 divisors (see below), whose sum is σ = 80966704. Its totient is φ = 8007552.

The previous prime is 28026683. The next prime is 28026701. The reversal of 28026684 is 48662082.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55357 + ... + 55860.

Almost surely, 2^28026684 is an apocalyptic number.

It is an amenable number.

28026684 is an abundant number, since it is smaller than the sum of its proper divisors (52940020).

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

28026684 is a wasteful number, since it uses less digits than its factorization.

28026684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111234 (or 111229 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 28026684 is about 5294.0234226909. The cubic root of 28026684 is about 303.7553288706.

The spelling of 28026684 in words is "twenty-eight million, twenty-six thousand, six hundred eighty-four".