18716140 has 24 divisors (see below), whose sum is σ = 41373360. Its totient is φ = 7092288.

The previous prime is 18716129. The next prime is 18716141. The reversal of 18716140 is 4161781.

It is a junction number, because it is equal to n+sod(n) for n = 18716099 and 18716108.

It is not an unprimeable number, because it can be changed into a prime (18716141) 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, 24247 + ... + 25006.

It is an arithmetic number, because the mean of its divisors is an integer number (1723890).

Almost surely, 2^18716140 is an apocalyptic number.

18716140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18716140 is an abundant number, since it is smaller than the sum of its proper divisors (22657220).

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

18716140 is a wasteful number, since it uses less digits than its factorization.

18716140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49281 (or 49279 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 18716140 is about 4326.2154361520. The cubic root of 18716140 is about 265.5046276279.

The spelling of 18716140 in words is "eighteen million, seven hundred sixteen thousand, one hundred forty".