2261968 has 20 divisors (see below), whose sum is σ = 4426180. Its totient is φ = 1119744.

The previous prime is 2261933. The next prime is 2261993. The reversal of 2261968 is 8691622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 222784 = 1428^2 + 472^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1096 + ... + 2392.

It is an arithmetic number, because the mean of its divisors is an integer number (221309).

2^2261968 is an apocalyptic number.

It is an amenable number.

2261968 is a deficient number, since it is larger than the sum of its proper divisors (2164212).

2261968 is a wasteful number, since it uses less digits than its factorization.

2261968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1408 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 2261968 is about 1503.9840424685. The cubic root of 2261968 is about 131.2689925652.

The spelling of 2261968 in words is "two million, two hundred sixty-one thousand, nine hundred sixty-eight".