18420076 has 12 divisors (see below), whose sum is σ = 33275200. Its totient is φ = 8912880.

The previous prime is 18420071. The next prime is 18420119. The reversal of 18420076 is 67002481.

It is not an unprimeable number, because it can be changed into a prime (18420071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74151 + ... + 74398.

Almost surely, 2^18420076 is an apocalyptic number.

It is an amenable number.

18420076 is a deficient number, since it is larger than the sum of its proper divisors (14855124).

18420076 is a wasteful number, since it uses less digits than its factorization.

18420076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148584 (or 148582 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18420076 is about 4291.8616007509. The cubic root of 18420076 is about 264.0972055572.

The spelling of 18420076 in words is "eighteen million, four hundred twenty thousand, seventy-six".