28866653 has 8 divisors (see below), whose sum is σ = 29338848. Its totient is φ = 28397584.

The previous prime is 28866637. The next prime is 28866689. The reversal of 28866653 is 35666882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28866653 - 2⁴ = 28866637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23726 + ... + 24912.

It is an arithmetic number, because the mean of its divisors is an integer number (3667356).

Almost surely, 2^28866653 is an apocalyptic number.

It is an amenable number.

28866653 is a deficient number, since it is larger than the sum of its proper divisors (472195).

28866653 is a wasteful number, since it uses less digits than its factorization.

28866653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563.

The product of its digits is 414720, while the sum is 44.

The square root of 28866653 is about 5372.7695837436. The cubic root of 28866653 is about 306.7600575414.

The spelling of 28866653 in words is "twenty-eight million, eight hundred sixty-six thousand, six hundred fifty-three".