28002799 has 16 divisors (see below), whose sum is σ = 32131584. Its totient is φ = 24156000.

The previous prime is 28002797. The next prime is 28002803. The reversal of 28002799 is 99720082.

It is not a de Polignac number, because 28002799 - 2¹ = 28002797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28002797) 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, 37837 + ... + 38569.

It is an arithmetic number, because the mean of its divisors is an integer number (2008224).

Almost surely, 2^28002799 is an apocalyptic number.

28002799 is a deficient number, since it is larger than the sum of its proper divisors (4128785).

28002799 is a wasteful number, since it uses less digits than its factorization.

28002799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 28002799 is about 5291.7670961598. The cubic root of 28002799 is about 303.6690151987.

It can be divided in two parts, 280027 and 99, that added together give a triangular number (280126 = T₇₄₈).

The spelling of 28002799 in words is "twenty-eight million, two thousand, seven hundred ninety-nine".