28266337 has 4 divisors (see below), whose sum is σ = 30836016. Its totient is φ = 25696660.

The previous prime is 28266299. The next prime is 28266341. The reversal of 28266337 is 73366282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28266337 - 2²³ = 19877729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28266296 and 28266305.

It is not an unprimeable number, because it can be changed into a prime (28266367) 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, 1284823 + ... + 1284844.

It is an arithmetic number, because the mean of its divisors is an integer number (7709004).

Almost surely, 2^28266337 is an apocalyptic number.

It is an amenable number.

28266337 is a deficient number, since it is larger than the sum of its proper divisors (2569679).

28266337 is a wasteful number, since it uses less digits than its factorization.

28266337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569678.

The product of its digits is 72576, while the sum is 37.

The square root of 28266337 is about 5316.6095399230. The cubic root of 28266337 is about 304.6186652320.

The spelling of 28266337 in words is "twenty-eight million, two hundred sixty-six thousand, three hundred thirty-seven".