2247818 has 4 divisors (see below), whose sum is σ = 3371730. Its totient is φ = 1123908.

The previous prime is 2247811. The next prime is 2247851. The reversal of 2247818 is 8187422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2229049 + 18769 = 1493^2 + 137^2 .

It is a super-2 number, since 2×2247818² = 10105371522248, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2247811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561953 + ... + 561956.

2^2247818 is an apocalyptic number.

2247818 is a deficient number, since it is larger than the sum of its proper divisors (1123912).

2247818 is a wasteful number, since it uses less digits than its factorization.

2247818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123911.

The product of its digits is 7168, while the sum is 32.

The square root of 2247818 is about 1499.2724902432. The cubic root of 2247818 is about 130.9946970641.

The spelling of 2247818 in words is "two million, two hundred forty-seven thousand, eight hundred eighteen".