28424384 has 14 divisors (see below), whose sum is σ = 56404764. Its totient is φ = 14212160.

The previous prime is 28424381. The next prime is 28424387. The reversal of 28424384 is 48342482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28424381) and next prime (28424387).

It is not an unprimeable number, because it can be changed into a prime (28424381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222002 + ... + 222129.

Almost surely, 2^28424384 is an apocalyptic number.

It is an amenable number.

28424384 is a deficient number, since it is larger than the sum of its proper divisors (27980380).

28424384 is an equidigital number, since it uses as much as digits as its factorization.

28424384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444143 (or 444133 counting only the distinct ones).

The product of its digits is 49152, while the sum is 35.

The square root of 28424384 is about 5331.4523349646. The cubic root of 28424384 is about 305.1853536072.

The spelling of 28424384 in words is "twenty-eight million, four hundred twenty-four thousand, three hundred eighty-four".