28937384 has 64 divisors (see below), whose sum is σ = 65126400. Its totient is φ = 11793600.

The previous prime is 28937357. The next prime is 28937393. The reversal of 28937384 is 48373982.

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, 137039 + ... + 137249.

It is an arithmetic number, because the mean of its divisors is an integer number (1017600).

Almost surely, 2^28937384 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 28937384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32563200).

28937384 is an abundant number, since it is smaller than the sum of its proper divisors (36189016).

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

28937384 is a wasteful number, since it uses less digits than its factorization.

28937384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 330 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 28937384 is about 5379.3479158723. The cubic root of 28937384 is about 307.0104011726.

It can be divided in two parts, 289 and 37384, that added together give a palindrome (37673).

The spelling of 28937384 in words is "twenty-eight million, nine hundred thirty-seven thousand, three hundred eighty-four".