18741320 has 64 divisors (see below), whose sum is σ = 47416320. Its totient is φ = 6614784.

The previous prime is 18741319. The next prime is 18741367. The reversal of 18741320 is 2314781.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 18741320.

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, 11177 + ... + 12743.

It is an arithmetic number, because the mean of its divisors is an integer number (740880).

Almost surely, 2^18741320 is an apocalyptic number.

18741320 is a gapful number since it is divisible by the number (10) 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 18741320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23708160).

18741320 is an abundant number, since it is smaller than the sum of its proper divisors (28675000).

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

18741320 is a wasteful number, since it uses less digits than its factorization.

18741320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614 (or 1610 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 18741320 is about 4329.1246228308. The cubic root of 18741320 is about 265.6236409619.

The spelling of 18741320 in words is "eighteen million, seven hundred forty-one thousand, three hundred twenty".