28264099 has 4 divisors (see below), whose sum is σ = 28369440. Its totient is φ = 28158760.

The previous prime is 28264097. The next prime is 28264111. The reversal of 28264099 is 99046282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99046282 = 2 ⋅49523141.

It is a cyclic number.

It is not a de Polignac number, because 28264099 - 2¹ = 28264097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28264091) 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, 52267 + ... + 52804.

It is an arithmetic number, because the mean of its divisors is an integer number (7092360).

Almost surely, 2^28264099 is an apocalyptic number.

28264099 is a deficient number, since it is larger than the sum of its proper divisors (105341).

28264099 is a wasteful number, since it uses less digits than its factorization.

28264099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105340.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 28264099 is about 5316.3990632758. The cubic root of 28264099 is about 304.6106255797.

The spelling of 28264099 in words is "twenty-eight million, two hundred sixty-four thousand, ninety-nine".