18422276 has 6 divisors (see below), whose sum is σ = 32238990. Its totient is φ = 9211136.

The previous prime is 18422273. The next prime is 18422291. The reversal of 18422276 is 67222481.

It can be written as a sum of positive squares in only one way, i.e., 17422276 + 1000000 = 4174^2 + 1000^2 .

It is not an unprimeable number, because it can be changed into a prime (18422273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2302781 + ... + 2302788.

It is an arithmetic number, because the mean of its divisors is an integer number (5373165).

Almost surely, 2^18422276 is an apocalyptic number.

It is an amenable number.

18422276 is a deficient number, since it is larger than the sum of its proper divisors (13816714).

18422276 is a wasteful number, since it uses less digits than its factorization.

18422276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4605573 (or 4605571 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 18422276 is about 4292.1178921367. The cubic root of 18422276 is about 264.1077192800.

The spelling of 18422276 in words is "eighteen million, four hundred twenty-two thousand, two hundred seventy-six".