28733099 has 4 divisors (see below), whose sum is σ = 28756680. Its totient is φ = 28709520.

The previous prime is 28733069. The next prime is 28733119. The reversal of 28733099 is 99033782.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28733099 - 2⁸ = 28732843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28733039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9857 + ... + 12434.

It is an arithmetic number, because the mean of its divisors is an integer number (7189170).

Almost surely, 2^28733099 is an apocalyptic number.

28733099 is a deficient number, since it is larger than the sum of its proper divisors (23581).

28733099 is a wasteful number, since it uses less digits than its factorization.

28733099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23580.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 28733099 is about 5360.3263893162. The cubic root of 28733099 is about 306.2862423303.

The spelling of 28733099 in words is "twenty-eight million, seven hundred thirty-three thousand, ninety-nine".