18522030 has 16 divisors (see below), whose sum is σ = 44452944. Its totient is φ = 4939200.

The previous prime is 18522029. The next prime is 18522059. The reversal of 18522030 is 3022581.

It is a junction number, because it is equal to n+sod(n) for n = 18521988 and 18522006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308671 + ... + 308730.

It is an arithmetic number, because the mean of its divisors is an integer number (2778309).

Almost surely, 2^18522030 is an apocalyptic number.

18522030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18522030 is an abundant number, since it is smaller than the sum of its proper divisors (25930914).

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

18522030 is a wasteful number, since it uses less digits than its factorization.

18522030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617411.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 18522030 is about 4303.7228070590. The cubic root of 18522030 is about 264.5835633260.

The spelling of 18522030 in words is "eighteen million, five hundred twenty-two thousand, thirty".