28303022 has 16 divisors (see below), whose sum is σ = 46397232. Its totient is φ = 12841920.

The previous prime is 28303021. The next prime is 28303057. The reversal of 28303022 is 22030382.

It is a happy number.

It is a super-2 number, since 2×28303022² = 1602122108664968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28302985 and 28303003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28303021) 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, 19928 + ... + 21300.

It is an arithmetic number, because the mean of its divisors is an integer number (2899827).

Almost surely, 2^28303022 is an apocalyptic number.

28303022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28303022 is a deficient number, since it is larger than the sum of its proper divisors (18094210).

28303022 is a wasteful number, since it uses less digits than its factorization.

28303022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 28303022 is about 5320.0584583254. The cubic root of 28303022 is about 304.7503897024.

The spelling of 28303022 in words is "twenty-eight million, three hundred three thousand, twenty-two".