28452384 has 72 divisors (see below), whose sum is σ = 83931120. Its totient is φ = 9481536.

The previous prime is 28452377. The next prime is 28452397. The reversal of 28452384 is 48325482.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5947 + ... + 9605.

It is an arithmetic number, because the mean of its divisors is an integer number (1165710).

Almost surely, 2^28452384 is an apocalyptic number.

28452384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28452384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41965560).

28452384 is an abundant number, since it is smaller than the sum of its proper divisors (55478736).

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

28452384 is an equidigital number, since it uses as much as digits as its factorization.

28452384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684 (or 3664 counting only the distinct ones).

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

The square root of 28452384 is about 5334.0776147334. The cubic root of 28452384 is about 305.2855303377.

The spelling of 28452384 in words is "twenty-eight million, four hundred fifty-two thousand, three hundred eighty-four".