18102128 has 40 divisors (see below), whose sum is σ = 38557056. Its totient is φ = 8164800.

The previous prime is 18102121. The next prime is 18102131. The reversal of 18102128 is 82120181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18102121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28373 + ... + 29003.

Almost surely, 2^18102128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18102128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19278528).

18102128 is an abundant number, since it is smaller than the sum of its proper divisors (20454928).

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

18102128 is a wasteful number, since it uses less digits than its factorization.

18102128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 18102128 is about 4254.6595633493. The cubic root of 18102128 is about 262.5688551044.

The spelling of 18102128 in words is "eighteen million, one hundred two thousand, one hundred twenty-eight".