28866042 has 12 divisors (see below), whose sum is σ = 62543130. Its totient is φ = 9622008.

The previous prime is 28866011. The next prime is 28866043. The reversal of 28866042 is 24066882.

It can be written as a sum of positive squares in only one way, i.e., 16818201 + 12047841 = 4101^2 + 3471^2 .

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 junction number, because it is equal to n+sod(n) for n = 28865988 and 28866006.

It is not an unprimeable number, because it can be changed into a prime (28866043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 801817 + ... + 801852.

Almost surely, 2^28866042 is an apocalyptic number.

28866042 is an abundant number, since it is smaller than the sum of its proper divisors (33677088).

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

28866042 is a wasteful number, since it uses less digits than its factorization.

28866042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603677 (or 1603674 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 28866042 is about 5372.7127226384. The cubic root of 28866042 is about 306.7578932018.

The spelling of 28866042 in words is "twenty-eight million, eight hundred sixty-six thousand, forty-two".