18488322 has 12 divisors (see below), whose sum is σ = 40058070. Its totient is φ = 6162768.

The previous prime is 18488321. The next prime is 18488339. The reversal of 18488322 is 22388481.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17715681 + 772641 = 4209^2 + 879^2 .

It is not an unprimeable number, because it can be changed into a prime (18488321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 513547 + ... + 513582.

Almost surely, 2^18488322 is an apocalyptic number.

18488322 is an abundant number, since it is smaller than the sum of its proper divisors (21569748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18488322 is a wasteful number, since it uses less digits than its factorization.

18488322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027137 (or 1027134 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 18488322 is about 4299.8048792939. The cubic root of 18488322 is about 264.4229618063.

The spelling of 18488322 in words is "eighteen million, four hundred eighty-eight thousand, three hundred twenty-two".