28866804 has 24 divisors (see below), whose sum is σ = 67703328. Its totient is φ = 9572640.

The previous prime is 28866779. The next prime is 28866809. The reversal of 28866804 is 40866882.

It is a super-3 number, since 3×28866804³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866809) 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, 3742 + ... + 8469.

It is an arithmetic number, because the mean of its divisors is an integer number (2820972).

Almost surely, 2^28866804 is an apocalyptic number.

It is an amenable number.

28866804 is an abundant number, since it is smaller than the sum of its proper divisors (38836524).

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

28866804 is a wasteful number, since it uses less digits than its factorization.

28866804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12415 (or 12413 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 28866804 is about 5372.7836360680. The cubic root of 28866804 is about 306.7605924225.

The spelling of 28866804 in words is "twenty-eight million, eight hundred sixty-six thousand, eight hundred four".