2787232 has 48 divisors (see below), whose sum is σ = 6556032. Its totient is φ = 1140480.

The previous prime is 2787229. The next prime is 2787233. The reversal of 2787232 is 2327872.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2787194 and 2787203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4882 + ... + 5422.

It is an arithmetic number, because the mean of its divisors is an integer number (136584).

2^2787232 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 2787232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3278016).

2787232 is an abundant number, since it is smaller than the sum of its proper divisors (3768800).

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

2787232 is a wasteful number, since it uses less digits than its factorization.

2787232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 573 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 2787232 is about 1669.5005241089. The cubic root of 2787232 is about 140.7314102908.

The spelling of 2787232 in words is "two million, seven hundred eighty-seven thousand, two hundred thirty-two".