28944336 has 80 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 8945664.

The previous prime is 28944299. The next prime is 28944361. The reversal of 28944336 is 63344982.

It is a junction number, because it is equal to n+sod(n) for n = 28944294 and 28944303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64240 + ... + 64688.

It is an arithmetic number, because the mean of its divisors is an integer number (1004400).

Almost surely, 2^28944336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28944336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176000).

28944336 is an abundant number, since it is smaller than the sum of its proper divisors (51407664).

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

28944336 is a wasteful number, since it uses less digits than its factorization.

28944336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 550 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 28944336 is about 5379.9940520413. The cubic root of 28944336 is about 307.0349848900.

The spelling of 28944336 in words is "twenty-eight million, nine hundred forty-four thousand, three hundred thirty-six".