28093653 has 12 divisors (see below), whose sum is σ = 46376928. Its totient is φ = 16053480.

The previous prime is 28093633. The next prime is 28093661. The reversal of 28093653 is 35639082.

It is not a de Polignac number, because 28093653 - 2¹⁷ = 27962581 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28093613) 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, 222903 + ... + 223028.

It is an arithmetic number, because the mean of its divisors is an integer number (3864744).

Almost surely, 2^28093653 is an apocalyptic number.

It is an amenable number.

28093653 is a deficient number, since it is larger than the sum of its proper divisors (18283275).

28093653 is a wasteful number, since it uses less digits than its factorization.

28093653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445944 (or 445941 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 28093653 is about 5300.3446114380. The cubic root of 28093653 is about 303.9970747930.

The spelling of 28093653 in words is "twenty-eight million, ninety-three thousand, six hundred fifty-three".