28430322 has 16 divisors (see below), whose sum is σ = 57546720. Its totient is φ = 9362432.

The previous prime is 28430299. The next prime is 28430329. The reversal of 28430322 is 22303482.

It is a junction number, because it is equal to n+sod(n) for n = 28430292 and 28430301.

It is not an unprimeable number, because it can be changed into a prime (28430329) 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, 28047 + ... + 29042.

It is an arithmetic number, because the mean of its divisors is an integer number (3596670).

Almost surely, 2^28430322 is an apocalyptic number.

28430322 is an abundant number, since it is smaller than the sum of its proper divisors (29116398).

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

28430322 is a wasteful number, since it uses less digits than its factorization.

28430322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57177.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 28430322 is about 5332.0091897895. The cubic root of 28430322 is about 305.2066037241.

The spelling of 28430322 in words is "twenty-eight million, four hundred thirty thousand, three hundred twenty-two".