18700074 has 24 divisors (see below), whose sum is σ = 40671072. Its totient is φ = 6209640.

The previous prime is 18700067. The next prime is 18700079. The reversal of 18700074 is 47000781.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18700079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3259 + ... + 6929.

It is an arithmetic number, because the mean of its divisors is an integer number (1694628).

Almost surely, 2^18700074 is an apocalyptic number.

18700074 is an abundant number, since it is smaller than the sum of its proper divisors (21970998).

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

18700074 is a wasteful number, since it uses less digits than its factorization.

18700074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962 (or 3959 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 18700074 is about 4324.3582182793. The cubic root of 18700074 is about 265.4286358464.

The spelling of 18700074 in words is "eighteen million, seven hundred thousand, seventy-four".