18678084 has 24 divisors (see below), whose sum is σ = 43662528. Its totient is φ = 6214560.

The previous prime is 18678073. The next prime is 18678091. The reversal of 18678084 is 48087681.

It is a super-2 number, since 2×18678084² = 697741643822112, which contains 22 as substring.

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, 7654 + ... + 9794.

It is an arithmetic number, because the mean of its divisors is an integer number (1819272).

Almost surely, 2^18678084 is an apocalyptic number.

It is an amenable number.

18678084 is an abundant number, since it is smaller than the sum of its proper divisors (24984444).

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

18678084 is a wasteful number, since it uses less digits than its factorization.

18678084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875 (or 2873 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 18678084 is about 4321.8148965452. The cubic root of 18678084 is about 265.3245531018.

The spelling of 18678084 in words is "eighteen million, six hundred seventy-eight thousand, eighty-four".