2166448 has 10 divisors (see below), whose sum is σ = 4197524. Its totient is φ = 1083216.

The previous prime is 2166431. The next prime is 2166449. The reversal of 2166448 is 8446612.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2166449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67686 + ... + 67717.

2^2166448 is an apocalyptic number.

It is an amenable number.

2166448 is a deficient number, since it is larger than the sum of its proper divisors (2031076).

2166448 is a wasteful number, since it uses less digits than its factorization.

2166448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135411 (or 135405 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 2166448 is about 1471.8858651404. The cubic root of 2166448 is about 129.3945813516.

It can be divided in two parts, 21664 and 48, that added together give a palindrome (21712).

The spelling of 2166448 in words is "two million, one hundred sixty-six thousand, four hundred forty-eight".