2263444 has 12 divisors (see below), whose sum is σ = 3971968. Its totient is φ = 1128600.

The previous prime is 2263441. The next prime is 2263447. The reversal of 2263444 is 4443622.

It is an interprime number because it is at equal distance from previous prime (2263441) and next prime (2263447).

It is a super-2 number, since 2×2263444² = 10246357482272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2263441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1789 + ... + 2779.

2^2263444 is an apocalyptic number.

It is an amenable number.

2263444 is a deficient number, since it is larger than the sum of its proper divisors (1708524).

2263444 is a wasteful number, since it uses less digits than its factorization.

2263444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1564 counting only the distinct ones).

The product of its digits is 4608, while the sum is 25.

The square root of 2263444 is about 1504.4746591419. The cubic root of 2263444 is about 131.2975386374.

The spelling of 2263444 in words is "two million, two hundred sixty-three thousand, four hundred forty-four".