18052416 has 112 divisors (see below), whose sum is σ = 54945280. Its totient is φ = 5806080.

The previous prime is 18052403. The next prime is 18052421. The reversal of 18052416 is 61425081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 18052416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53400 + ... + 53736.

Almost surely, 2^18052416 is an apocalyptic number.

18052416 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 18052416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27472640).

18052416 is an abundant number, since it is smaller than the sum of its proper divisors (36892864).

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

18052416 is a wasteful number, since it uses less digits than its factorization.

18052416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18052416 is about 4248.8134814322. The cubic root of 18052416 is about 262.3282795263.

Adding to 18052416 its reverse (61425081), we get a palindrome (79477497).

The spelling of 18052416 in words is "eighteen million, fifty-two thousand, four hundred sixteen".