28299088 has 20 divisors (see below), whose sum is σ = 54935968. Its totient is φ = 14122080.

The previous prime is 28299053. The next prime is 28299091. The reversal of 28299088 is 88099282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8695 + ... + 11497.

Almost surely, 2^28299088 is an apocalyptic number.

It is an amenable number.

28299088 is a deficient number, since it is larger than the sum of its proper divisors (26636880).

28299088 is a wasteful number, since it uses less digits than its factorization.

28299088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442 (or 3436 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 28299088 is about 5319.6887126974. The cubic root of 28299088 is about 304.7362693777.

The spelling of 28299088 in words is "twenty-eight million, two hundred ninety-nine thousand, eighty-eight".