28144896 has 72 divisors (see below), whose sum is σ = 80697120. Its totient is φ = 8656896.

The previous prime is 28144873. The next prime is 28144903. The reversal of 28144896 is 69844182.

It is a congruent number.

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, 8575 + ... + 11393.

Almost surely, 2^28144896 is an apocalyptic number.

28144896 is a gapful number since it is divisible by the number (26) 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 28144896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40348560).

28144896 is an abundant number, since it is smaller than the sum of its proper divisors (52552224).

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

28144896 is a wasteful number, since it uses less digits than its factorization.

28144896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851 (or 2837 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 28144896 is about 5305.1763401418. The cubic root of 28144896 is about 304.1817933888.

The spelling of 28144896 in words is "twenty-eight million, one hundred forty-four thousand, eight hundred ninety-six".