28968384 has 84 divisors (see below), whose sum is σ = 79702152. Its totient is φ = 9285120.

The previous prime is 28968377. The next prime is 28968389. The reversal of 28968384 is 48386982.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28968389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184434 + ... + 184590.

Almost surely, 2^28968384 is an apocalyptic number.

28968384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28968384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39851076).

28968384 is an abundant number, since it is smaller than the sum of its proper divisors (50733768).

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

28968384 is a wasteful number, since it uses less digits than its factorization.

28968384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 193 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 28968384 is about 5382.2285347243. The cubic root of 28968384 is about 307.1199932709.

The spelling of 28968384 in words is "twenty-eight million, nine hundred sixty-eight thousand, three hundred eighty-four".