2818728 has 48 divisors (see below), whose sum is σ = 8330400. Its totient is φ = 853920.

The previous prime is 2818687. The next prime is 2818729. The reversal of 2818728 is 8278182.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 2818692 and 2818701.

It is not an unprimeable number, because it can be changed into a prime (2818729) 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, 988 + ... + 2571.

It is an arithmetic number, because the mean of its divisors is an integer number (173550).

2^2818728 is an apocalyptic number.

It is an amenable number.

2818728 is an abundant number, since it is smaller than the sum of its proper divisors (5511672).

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

2818728 is a wasteful number, since it uses less digits than its factorization.

2818728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3575 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2818728 is about 1678.9067871684. The cubic root of 2818728 is about 141.2595190285.

It can be divided in two parts, 281 and 8728, that added together give a palindrome (9009).

The spelling of 2818728 in words is "two million, eight hundred eighteen thousand, seven hundred twenty-eight".