18873628 has 12 divisors (see below), whose sum is σ = 33589080. Its totient is φ = 9276752.

The previous prime is 18873611. The next prime is 18873629. The reversal of 18873628 is 82637881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18873629) 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, 39751 + ... + 40222.

It is an arithmetic number, because the mean of its divisors is an integer number (2799090).

Almost surely, 2^18873628 is an apocalyptic number.

It is an amenable number.

18873628 is a deficient number, since it is larger than the sum of its proper divisors (14715452).

18873628 is a wasteful number, since it uses less digits than its factorization.

18873628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80036 (or 80034 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 18873628 is about 4344.3788969196. The cubic root of 18873628 is about 266.2472497089.

The spelling of 18873628 in words is "eighteen million, eight hundred seventy-three thousand, six hundred twenty-eight".