2286921 has 16 divisors (see below), whose sum is σ = 3753344. Its totient is φ = 1206144.

The previous prime is 2286883. The next prime is 2286953. The reversal of 2286921 is 1296822.

It is not a de Polignac number, because 2286921 - 2⁷ = 2286793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2286961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3916 + ... + 4461.

It is an arithmetic number, because the mean of its divisors is an integer number (234584).

2^2286921 is an apocalyptic number.

2286921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2286921 is a deficient number, since it is larger than the sum of its proper divisors (1466423).

2286921 is a wasteful number, since it uses less digits than its factorization.

2286921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400.

The product of its digits is 3456, while the sum is 30.

The square root of 2286921 is about 1512.2569226160. The cubic root of 2286921 is about 131.7499282874.

Subtracting from 2286921 its reverse (1296822), we obtain a palindrome (990099).

It can be divided in two parts, 22869 and 21, that multiplied together give a square (480249 = 693²).

The spelling of 2286921 in words is "two million, two hundred eighty-six thousand, nine hundred twenty-one".