18530722 has 24 divisors (see below), whose sum is σ = 32550876. Its totient is φ = 7888608.

The previous prime is 18530713. The next prime is 18530741. The reversal of 18530722 is 22703581.

It can be written as a sum of positive squares in 2 ways, for example, as 13097161 + 5433561 = 3619^2 + 2331^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16408 + ... + 17500.

Almost surely, 2^18530722 is an apocalyptic number.

18530722 is a deficient number, since it is larger than the sum of its proper divisors (14020154).

18530722 is a wasteful number, since it uses less digits than its factorization.

18530722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 18530722 is about 4304.7325120151. The cubic root of 18530722 is about 264.6249446916.

The spelling of 18530722 in words is "eighteen million, five hundred thirty thousand, seven hundred twenty-two".