28426304 has 28 divisors (see below), whose sum is σ = 56581548. Its totient is φ = 14169600.

The previous prime is 28426303. The next prime is 28426309. The reversal of 28426304 is 40362482.

It can be written as a sum of positive squares in 2 ways, for example, as 9486400 + 18939904 = 3080^2 + 4352^2 .

It is not an unprimeable number, because it can be changed into a prime (28426301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34214 + ... + 35034.

Almost surely, 2^28426304 is an apocalyptic number.

It is an amenable number.

28426304 is a deficient number, since it is larger than the sum of its proper divisors (28155244).

28426304 is an equidigital number, since it uses as much as digits as its factorization.

28426304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 28426304 is about 5331.6323954301. The cubic root of 28426304 is about 305.1922249691.

Adding to 28426304 its reverse (40362482), we get a palindrome (68788786).

The spelling of 28426304 in words is "twenty-eight million, four hundred twenty-six thousand, three hundred four".