28811744 has 24 divisors (see below), whose sum is σ = 61087320. Its totient is φ = 13297536.

The previous prime is 28811743. The next prime is 28811749. The reversal of 28811744 is 44711882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28811743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34214 + ... + 35045.

It is an arithmetic number, because the mean of its divisors is an integer number (2545305).

Almost surely, 2^28811744 is an apocalyptic number.

It is an amenable number.

28811744 is an abundant number, since it is smaller than the sum of its proper divisors (32275576).

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

28811744 is a wasteful number, since it uses less digits than its factorization.

28811744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69282 (or 69274 counting only the distinct ones).

The product of its digits is 14336, while the sum is 35.

The square root of 28811744 is about 5367.6572170734. The cubic root of 28811744 is about 306.5654318231.

The spelling of 28811744 in words is "twenty-eight million, eight hundred eleven thousand, seven hundred forty-four".