18424028 has 12 divisors (see below), whose sum is σ = 36848112. Its totient is φ = 7896000.

The previous prime is 18424027. The next prime is 18424067. The reversal of 18424028 is 82042481.

18424028 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18424027) 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, 328973 + ... + 329028.

It is an arithmetic number, because the mean of its divisors is an integer number (3070676).

Almost surely, 2^18424028 is an apocalyptic number.

It is an amenable number.

18424028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18424028 is a wasteful number, since it uses less digits than its factorization.

18424028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658012 (or 658010 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 18424028 is about 4292.3219823308. The cubic root of 18424028 is about 264.1160914279.

The spelling of 18424028 in words is "eighteen million, four hundred twenty-four thousand, twenty-eight".