18460416 has 108 divisors (see below), whose sum is σ = 54170088. Its totient is φ = 5548032.

The previous prime is 18460399. The next prime is 18460417. The reversal of 18460416 is 61406481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18460417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429291 + ... + 429333.

Almost surely, 2^18460416 is an apocalyptic number.

18460416 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 18460416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27085044).

18460416 is an abundant number, since it is smaller than the sum of its proper divisors (35709672).

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

18460416 is an equidigital number, since it uses as much as digits as its factorization.

18460416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18460416 is about 4296.5586228981. The cubic root of 18460416 is about 264.2898561110.

Adding to 18460416 its reverse (61406481), we get a palindrome (79866897).

The spelling of 18460416 in words is "eighteen million, four hundred sixty thousand, four hundred sixteen".