18080732 has 6 divisors (see below), whose sum is σ = 31641288. Its totient is φ = 9040364.

The previous prime is 18080731. The next prime is 18080743. The reversal of 18080732 is 23708081.

It is a junction number, because it is equal to n+sod(n) for n = 18080695 and 18080704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260088 + ... + 2260095.

It is an arithmetic number, because the mean of its divisors is an integer number (5273548).

Almost surely, 2^18080732 is an apocalyptic number.

It is an amenable number.

18080732 is a deficient number, since it is larger than the sum of its proper divisors (13560556).

18080732 is a wasteful number, since it uses less digits than its factorization.

18080732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520187 (or 4520185 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 18080732 is about 4252.1444001821. The cubic root of 18080732 is about 262.4653656497.

The spelling of 18080732 in words is "eighteen million, eighty thousand, seven hundred thirty-two".