28099883 has 24 divisors (see below), whose sum is σ = 34128864. Its totient is φ = 23049600.

The previous prime is 28099853. The next prime is 28099889. The reversal of 28099883 is 38899082.

It is a happy number.

It is not a de Polignac number, because 28099883 - 2¹⁰ = 28098859 is a prime.

It is a super-2 number, since 2×28099883² = 1579206849227378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28099889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142541 + ... + 142737.

It is an arithmetic number, because the mean of its divisors is an integer number (1422036).

Almost surely, 2^28099883 is an apocalyptic number.

28099883 is a deficient number, since it is larger than the sum of its proper divisors (6028981).

28099883 is a wasteful number, since it uses less digits than its factorization.

28099883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 28099883 is about 5300.9322764963. The cubic root of 28099883 is about 304.0195444210.

It can be divided in two parts, 28099 and 883, that added together give a palindrome (28982).

The spelling of 28099883 in words is "twenty-eight million, ninety-nine thousand, eight hundred eighty-three".