28767424 has 56 divisors (see below), whose sum is σ = 65816480. Its totient is φ = 12220416.

The previous prime is 28767421. The next prime is 28767437. The reversal of 28767424 is 42476782.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (28767421) 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 7 ways as a sum of consecutive naturals, for example, 70132 + ... + 70540.

Almost surely, 2^28767424 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 28767424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32908240).

28767424 is an abundant number, since it is smaller than the sum of its proper divisors (37049056).

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

28767424 is a wasteful number, since it uses less digits than its factorization.

28767424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 575 counting only the distinct ones).

The product of its digits is 150528, while the sum is 40.

The square root of 28767424 is about 5363.5271976564. The cubic root of 28767424 is about 306.4081585404.

The spelling of 28767424 in words is "twenty-eight million, seven hundred sixty-seven thousand, four hundred twenty-four".