28766888 has 8 divisors (see below), whose sum is σ = 53937930. Its totient is φ = 14383440.

The previous prime is 28766833. The next prime is 28766909. The reversal of 28766888 is 88866782.

It can be written as a sum of positive squares in only one way, i.e., 27019204 + 1747684 = 5198^2 + 1322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1797923 + ... + 1797938.

Almost surely, 2^28766888 is an apocalyptic number.

It is an amenable number.

28766888 is a deficient number, since it is larger than the sum of its proper divisors (25171042).

28766888 is a wasteful number, since it uses less digits than its factorization.

28766888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595867 (or 3595863 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 53.

The square root of 28766888 is about 5363.4772303050. The cubic root of 28766888 is about 306.4062555106.

The spelling of 28766888 in words is "twenty-eight million, seven hundred sixty-six thousand, eight hundred eighty-eight".