28206330 has 32 divisors (see below), whose sum is σ = 68710464. Its totient is φ = 7408896.

The previous prime is 28206329. The next prime is 28206337. The reversal of 28206330 is 3360282.

It is a self number, because there is not a number n which added to its sum of digits gives 28206330.

It is not an unprimeable number, because it can be changed into a prime (28206337) 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, 5007 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (2147202).

Almost surely, 2^28206330 is an apocalyptic number.

28206330 is an abundant number, since it is smaller than the sum of its proper divisors (40504134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28206330 is a wasteful number, since it uses less digits than its factorization.

28206330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14110.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28206330 is about 5310.9631894789. The cubic root of 28206330 is about 304.4029527797.

The spelling of 28206330 in words is "twenty-eight million, two hundred six thousand, three hundred thirty".