18057678 has 16 divisors (see below), whose sum is σ = 36955776. Its totient is φ = 5879160.

The previous prime is 18057673. The next prime is 18057709. The reversal of 18057678 is 87675081.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18057673) 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, 34738 + ... + 35253.

It is an arithmetic number, because the mean of its divisors is an integer number (2309736).

Almost surely, 2^18057678 is an apocalyptic number.

18057678 is an abundant number, since it is smaller than the sum of its proper divisors (18898098).

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

18057678 is a wasteful number, since it uses less digits than its factorization.

18057678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70039.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 18057678 is about 4249.4326680158. The cubic root of 18057678 is about 262.3537652620.

The spelling of 18057678 in words is "eighteen million, fifty-seven thousand, six hundred seventy-eight".