2261568 has 28 divisors (see below), whose sum is σ = 5984240. Its totient is φ = 753792.

The previous prime is 2261557. The next prime is 2261569. The reversal of 2261568 is 8651622.

It is a super-2 number, since 2×2261568² = 10229379637248, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2261569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5698 + ... + 6081.

2^2261568 is an apocalyptic number.

It is an amenable number.

2261568 is an abundant number, since it is smaller than the sum of its proper divisors (3722672).

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

2261568 is a wasteful number, since it uses less digits than its factorization.

2261568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11794 (or 11784 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 2261568 is about 1503.8510564547. The cubic root of 2261568 is about 131.2612543637.

The spelling of 2261568 in words is "two million, two hundred sixty-one thousand, five hundred sixty-eight".