18190128 has 80 divisors (see below), whose sum is σ = 52425216. Its totient is φ = 5387520.

The previous prime is 18190127. The next prime is 18190223. The reversal of 18190128 is 82109181.

It is a junction number, because it is equal to n+sod(n) for n = 18190095 and 18190104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18190121) 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 15 ways as a sum of consecutive naturals, for example, 24450 + ... + 25182.

Almost surely, 2^18190128 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 18190128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26212608).

18190128 is an abundant number, since it is smaller than the sum of its proper divisors (34235088).

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

18190128 is a wasteful number, since it uses less digits than its factorization.

18190128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 18190128 is about 4264.9886283553. The cubic root of 18190128 is about 262.9936434343.

It can be divided in two parts, 181 and 90128, that added together give a palindrome (90309).

The spelling of 18190128 in words is "eighteen million, one hundred ninety thousand, one hundred twenty-eight".