28652299 has 4 divisors (see below), whose sum is σ = 30856336. Its totient is φ = 26448264.

The previous prime is 28652297. The next prime is 28652329. The reversal of 28652299 is 99225682.

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 28652299 - 2¹ = 28652297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28652291) 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 3 ways as a sum of consecutive naturals, for example, 1101999 + ... + 1102024.

It is an arithmetic number, because the mean of its divisors is an integer number (7714084).

Almost surely, 2^28652299 is an apocalyptic number.

28652299 is a deficient number, since it is larger than the sum of its proper divisors (2204037).

28652299 is a wasteful number, since it uses less digits than its factorization.

28652299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204036.

The product of its digits is 155520, while the sum is 43.

The square root of 28652299 is about 5352.7842287916. The cubic root of 28652299 is about 305.9988715125.

It can be divided in two parts, 2865 and 2299, that multiplied together give a triangular number (6586635 = T₃₆₂₉).

The spelling of 28652299 in words is "twenty-eight million, six hundred fifty-two thousand, two hundred ninety-nine".