28384452 has 24 divisors (see below), whose sum is σ = 73589600. Its totient is φ = 9461448.

The previous prime is 28384427. The next prime is 28384469. The reversal of 28384452 is 25448382.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 131302 + ... + 131517.

Almost surely, 2^28384452 is an apocalyptic number.

It is an amenable number.

28384452 is an abundant number, since it is smaller than the sum of its proper divisors (45205148).

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

28384452 is a wasteful number, since it uses less digits than its factorization.

28384452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262832 (or 262824 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 28384452 is about 5327.7060729736. The cubic root of 28384452 is about 305.0423734015.

The spelling of 28384452 in words is "twenty-eight million, three hundred eighty-four thousand, four hundred fifty-two".