28206959 has 8 divisors (see below), whose sum is σ = 30836352. Its totient is φ = 25588440.

The previous prime is 28206953. The next prime is 28206979. The reversal of 28206959 is 95960282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28206959 - 2⁴ = 28206943 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 (28206953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3302 + ... + 8204.

It is an arithmetic number, because the mean of its divisors is an integer number (3854544).

Almost surely, 2^28206959 is an apocalyptic number.

28206959 is a deficient number, since it is larger than the sum of its proper divisors (2629393).

28206959 is a wasteful number, since it uses less digits than its factorization.

28206959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 28206959 is about 5311.0224062792. The cubic root of 28206959 is about 304.4052154873.

It can be divided in two parts, 2820 and 6959, that added together give a palindrome (9779).

The spelling of 28206959 in words is "twenty-eight million, two hundred six thousand, nine hundred fifty-nine".