2281643 has 8 divisors (see below), whose sum is σ = 2808288. Its totient is φ = 1805184.

The previous prime is 2281619. The next prime is 2281651. The reversal of 2281643 is 3461822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2281643 - 2⁶ = 2281579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2281663) 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, 12446 + ... + 12627.

It is an arithmetic number, because the mean of its divisors is an integer number (351036).

2^2281643 is an apocalyptic number.

2281643 is a deficient number, since it is larger than the sum of its proper divisors (526645).

2281643 is a wasteful number, since it uses less digits than its factorization.

2281643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25093.

The product of its digits is 2304, while the sum is 26.

The square root of 2281643 is about 1510.5108407423. The cubic root of 2281643 is about 131.6484947059.

The spelling of 2281643 in words is "two million, two hundred eighty-one thousand, six hundred forty-three".