28220083 has 8 divisors (see below), whose sum is σ = 29227968. Its totient is φ = 27228264.

The previous prime is 28220081. The next prime is 28220089. The reversal of 28220083 is 38002282.

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 28220083 - 2¹ = 28220081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28220081) 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, 385 + ... + 7522.

It is an arithmetic number, because the mean of its divisors is an integer number (3653496).

Almost surely, 2^28220083 is an apocalyptic number.

28220083 is a deficient number, since it is larger than the sum of its proper divisors (1007885).

28220083 is an equidigital number, since it uses as much as digits as its factorization.

28220083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 28220083 is about 5312.2578062440. The cubic root of 28220083 is about 304.4524189052.

The spelling of 28220083 in words is "twenty-eight million, two hundred twenty thousand, eighty-three".