28766357 has 8 divisors (see below), whose sum is σ = 29820672. Its totient is φ = 27720000.

The previous prime is 28766341. The next prime is 28766359. The reversal of 28766357 is 75366782.

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 28766357 - 2⁴ = 28766341 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 (28766359) 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, 5933 + ... + 9629.

It is an arithmetic number, because the mean of its divisors is an integer number (3727584).

Almost surely, 2^28766357 is an apocalyptic number.

It is an amenable number.

28766357 is a deficient number, since it is larger than the sum of its proper divisors (1054315).

28766357 is a wasteful number, since it uses less digits than its factorization.

28766357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979.

The product of its digits is 423360, while the sum is 44.

The square root of 28766357 is about 5363.4277286079. The cubic root of 28766357 is about 306.4043702097.

The spelling of 28766357 in words is "twenty-eight million, seven hundred sixty-six thousand, three hundred fifty-seven".