28609024 has 40 divisors (see below), whose sum is σ = 58040928. Its totient is φ = 14085120.

The previous prime is 28609019. The next prime is 28609027. The reversal of 28609024 is 42090682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28609027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35959 + ... + 36745.

Almost surely, 2^28609024 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 28609024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29020464).

28609024 is an abundant number, since it is smaller than the sum of its proper divisors (29431904).

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

28609024 is an frugal number, since it uses more digits than its factorization.

28609024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 28609024 is about 5348.7404124710. The cubic root of 28609024 is about 305.8447387557.

The spelling of 28609024 in words is "twenty-eight million, six hundred nine thousand, twenty-four".