2311728 has 40 divisors (see below), whose sum is σ = 6325488. Its totient is φ = 724992.

The previous prime is 2311721. The next prime is 2311739. The reversal of 2311728 is 8271132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2311698 and 2311707.

It is not an unprimeable number, because it can be changed into a prime (2311721) 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, 601 + ... + 2232.

2^2311728 is an apocalyptic number.

It is an amenable number.

2311728 is an abundant number, since it is smaller than the sum of its proper divisors (4013760).

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

2311728 is a wasteful number, since it uses less digits than its factorization.

2311728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2855 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 2311728 is about 1520.4367793499. The cubic root of 2311728 is about 132.2245946842.

The spelling of 2311728 in words is "two million, three hundred eleven thousand, seven hundred twenty-eight".