28843632 has 60 divisors (see below), whose sum is σ = 83517720. Its totient is φ = 9281664.

The previous prime is 28843627. The next prime is 28843637. The reversal of 28843632 is 23634882.

It is an interprime number because it is at equal distance from previous prime (28843627) and next prime (28843637).

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28843637) 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, 723 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (1391962).

Almost surely, 2^28843632 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 28843632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41758860).

28843632 is an abundant number, since it is smaller than the sum of its proper divisors (54674088).

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

28843632 is a wasteful number, since it uses less digits than its factorization.

28843632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6950 (or 6941 counting only the distinct ones).

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

The square root of 28843632 is about 5370.6267790641. The cubic root of 28843632 is about 306.6784893573.

The spelling of 28843632 in words is "twenty-eight million, eight hundred forty-three thousand, six hundred thirty-two".