28222793 has 8 divisors (see below), whose sum is σ = 28512000. Its totient is φ = 27935488.

The previous prime is 28222783. The next prime is 28222819. The reversal of 28222793 is 39722282.

It is a happy number.

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 28222793 - 2⁶ = 28222729 is a prime.

It is a super-3 number, since 3×28222793³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28222723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62633 + ... + 63081.

It is an arithmetic number, because the mean of its divisors is an integer number (3564000).

Almost surely, 2^28222793 is an apocalyptic number.

It is an amenable number.

28222793 is a deficient number, since it is larger than the sum of its proper divisors (289207).

28222793 is a wasteful number, since it uses less digits than its factorization.

28222793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 24192, while the sum is 35.

The square root of 28222793 is about 5312.5128705726. The cubic root of 28222793 is about 304.4621642066.

It can be divided in two parts, 2822279 and 3, that added together give a palindrome (2822282).

The spelling of 28222793 in words is "twenty-eight million, two hundred twenty-two thousand, seven hundred ninety-three".