18268628 has 12 divisors (see below), whose sum is σ = 36537312. Its totient is φ = 7829400.

The previous prime is 18268619. The next prime is 18268643. The reversal of 18268628 is 82686281.

18268628 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326198 + ... + 326253.

It is an arithmetic number, because the mean of its divisors is an integer number (3044776).

Almost surely, 2^18268628 is an apocalyptic number.

It is an amenable number.

18268628 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.

18268628 is a wasteful number, since it uses less digits than its factorization.

18268628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652462 (or 652460 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 18268628 is about 4274.1815590824. The cubic root of 18268628 is about 263.3714192986.

The spelling of 18268628 in words is "eighteen million, two hundred sixty-eight thousand, six hundred twenty-eight".