28206263 has 8 divisors (see below), whose sum is σ = 28786032. Its totient is φ = 27631296.

The previous prime is 28206259. The next prime is 28206287. The reversal of 28206263 is 36260282.

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 28206263 - 2² = 28206259 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 (28206223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12131 + ... + 14267.

It is an arithmetic number, because the mean of its divisors is an integer number (3598254).

Almost surely, 2^28206263 is an apocalyptic number.

28206263 is a deficient number, since it is larger than the sum of its proper divisors (579769).

28206263 is a wasteful number, since it uses less digits than its factorization.

28206263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 28206263 is about 5310.9568817681. The cubic root of 28206263 is about 304.4027117580.

The spelling of 28206263 in words is "twenty-eight million, two hundred six thousand, two hundred sixty-three".