18057306 has 16 divisors (see below), whose sum is σ = 36883584. Its totient is φ = 5890944.

The previous prime is 18057293. The next prime is 18057307. The reversal of 18057306 is 60375081.

It is not an unprimeable number, because it can be changed into a prime (18057307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31735 + ... + 32298.

It is an arithmetic number, because the mean of its divisors is an integer number (2305224).

Almost surely, 2^18057306 is an apocalyptic number.

18057306 is an abundant number, since it is smaller than the sum of its proper divisors (18826278).

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

18057306 is a wasteful number, since it uses less digits than its factorization.

18057306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64085.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 18057306 is about 4249.3888972416. The cubic root of 18057306 is about 262.3519636965.

The spelling of 18057306 in words is "eighteen million, fifty-seven thousand, three hundred six".