18350416 has 40 divisors (see below), whose sum is σ = 41336640. Its totient is φ = 7728384.

The previous prime is 18350413. The next prime is 18350443. The reversal of 18350416 is 61405381.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18350413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5220 + ... + 7996.

It is an arithmetic number, because the mean of its divisors is an integer number (1033416).

Almost surely, 2^18350416 is an apocalyptic number.

18350416 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 18350416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20668320).

18350416 is an abundant number, since it is smaller than the sum of its proper divisors (22986224).

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

18350416 is a wasteful number, since it uses less digits than its factorization.

18350416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18350416 is about 4283.7385541137. The cubic root of 18350416 is about 263.7638690550.

Adding to 18350416 its reverse (61405381), we get a palindrome (79755797).

The spelling of 18350416 in words is "eighteen million, three hundred fifty thousand, four hundred sixteen".