28761099 has 16 divisors (see below), whose sum is σ = 39750432. Its totient is φ = 18482688.

The previous prime is 28761071. The next prime is 28761101. The reversal of 28761099 is 99016782.

It is not a de Polignac number, because 28761099 - 2⁸ = 28760843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28761099.

It is not an unprimeable number, because it can be changed into a prime (28761599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11397 + ... + 13689.

It is an arithmetic number, because the mean of its divisors is an integer number (2484402).

Almost surely, 2^28761099 is an apocalyptic number.

28761099 is a deficient number, since it is larger than the sum of its proper divisors (10989333).

28761099 is a wasteful number, since it uses less digits than its factorization.

28761099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 28761099 is about 5362.9375345980. The cubic root of 28761099 is about 306.3857005725.

The spelling of 28761099 in words is "twenty-eight million, seven hundred sixty-one thousand, ninety-nine".