18145296 has 120 divisors (see below), whose sum is σ = 56871360. Its totient is φ = 5567616.

The previous prime is 18145289. The next prime is 18145297. The reversal of 18145296 is 69254181.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18145296.

It is not an unprimeable number, because it can be changed into a prime (18145297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50365 + ... + 50723.

It is an arithmetic number, because the mean of its divisors is an integer number (473928).

Almost surely, 2^18145296 is an apocalyptic number.

18145296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18145296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28435680).

18145296 is an abundant number, since it is smaller than the sum of its proper divisors (38726064).

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

18145296 is a wasteful number, since it uses less digits than its factorization.

18145296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 377 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 18145296 is about 4259.7295688811. The cubic root of 18145296 is about 262.7774047002. Note that the first 3 decimals are identical.

The spelling of 18145296 in words is "eighteen million, one hundred forty-five thousand, two hundred ninety-six".