28022694 has 32 divisors (see below), whose sum is σ = 66839040. Its totient is φ = 7658112.

The previous prime is 28022689. The next prime is 28022711. The reversal of 28022694 is 49622082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13539 + ... + 15470.

It is an arithmetic number, because the mean of its divisors is an integer number (2088720).

Almost surely, 2^28022694 is an apocalyptic number.

28022694 is an abundant number, since it is smaller than the sum of its proper divisors (38816346).

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

28022694 is a wasteful number, since it uses less digits than its factorization.

28022694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29044.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 28022694 is about 5293.6465692375. The cubic root of 28022694 is about 303.7409135455.

Subtracting from 28022694 its product of nonzero digits (13824), we obtain a triangular number (28008870 = T₇₄₈₄).

The spelling of 28022694 in words is "twenty-eight million, twenty-two thousand, six hundred ninety-four".