28863324 has 96 divisors (see below), whose sum is σ = 86858240. Its totient is φ = 8118144.

The previous prime is 28863287. The next prime is 28863371. The reversal of 28863324 is 42336882.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54927 + ... + 55449.

Almost surely, 2^28863324 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 28863324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43429120).

28863324 is an abundant number, since it is smaller than the sum of its proper divisors (57994916).

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

28863324 is a wasteful number, since it uses less digits than its factorization.

28863324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 608 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28863324 is about 5372.4597718364. The cubic root of 28863324 is about 306.7482648858.

The spelling of 28863324 in words is "twenty-eight million, eight hundred sixty-three thousand, three hundred twenty-four".