18047030 has 32 divisors (see below), whose sum is σ = 35061984. Its totient is φ = 6662656.

The previous prime is 18047027. The next prime is 18047039. The reversal of 18047030 is 3074081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18046987 and 18047005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18047039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8009 + ... + 10011.

It is an arithmetic number, because the mean of its divisors is an integer number (1095687).

Almost surely, 2^18047030 is an apocalyptic number.

18047030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18047030 is a deficient number, since it is larger than the sum of its proper divisors (17014954).

18047030 is a wasteful number, since it uses less digits than its factorization.

18047030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 18047030 is about 4248.1796101389. The cubic root of 18047030 is about 262.3021880851.

The spelling of 18047030 in words is "eighteen million, forty-seven thousand, thirty".