18486428 has 12 divisors (see below), whose sum is σ = 32468352. Its totient is φ = 9209760.

The previous prime is 18486397. The next prime is 18486443. The reversal of 18486428 is 82468481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7100 + ... + 9347.

It is an arithmetic number, because the mean of its divisors is an integer number (2705696).

Almost surely, 2^18486428 is an apocalyptic number.

It is an amenable number.

18486428 is a deficient number, since it is larger than the sum of its proper divisors (13981924).

18486428 is a wasteful number, since it uses less digits than its factorization.

18486428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16732 (or 16730 counting only the distinct ones).

The product of its digits is 98304, while the sum is 41.

The square root of 18486428 is about 4299.5846311010. The cubic root of 18486428 is about 264.4139320668.

The spelling of 18486428 in words is "eighteen million, four hundred eighty-six thousand, four hundred twenty-eight".