18714320 has 40 divisors (see below), whose sum is σ = 43691400. Its totient is φ = 7454720.

The previous prime is 18714317. The next prime is 18714347. The reversal of 18714320 is 2341781.

It can be written as a sum of positive squares in 4 ways, for example, as 1308736 + 17405584 = 1144^2 + 4172^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 18714320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35660 + ... + 36180.

It is an arithmetic number, because the mean of its divisors is an integer number (1092285).

Almost surely, 2^18714320 is an apocalyptic number.

18714320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18714320 is an abundant number, since it is smaller than the sum of its proper divisors (24977080).

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

18714320 is a wasteful number, since it uses less digits than its factorization.

18714320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 977 counting only the distinct ones).

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

The square root of 18714320 is about 4326.0050855264. The cubic root of 18714320 is about 265.4960212577.

The spelling of 18714320 in words is "eighteen million, seven hundred fourteen thousand, three hundred twenty".