28683732 has 96 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 7240320.

The previous prime is 28683731. The next prime is 28683751. The reversal of 28683732 is 23738682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28683731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33769 + ... + 34607.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 2^28683732 is an apocalyptic number.

28683732 is a gapful number since it is divisible by the number (22) 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 28683732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42900480).

28683732 is an abundant number, since it is smaller than the sum of its proper divisors (57117228).

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

28683732 is a wasteful number, since it uses less digits than its factorization.

28683732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 899 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28683732 is about 5355.7195594990. The cubic root of 28683732 is about 306.1107292888.

The spelling of 28683732 in words is "twenty-eight million, six hundred eighty-three thousand, seven hundred thirty-two".