18703140 has 48 divisors (see below), whose sum is σ = 54649728. Its totient is φ = 4770304.

The previous prime is 18703127. The next prime is 18703141. The reversal of 18703140 is 4130781.

It is a self number, because there is not a number n which added to its sum of digits gives 18703140.

It is not an unprimeable number, because it can be changed into a prime (18703141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5397 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (1138536).

Almost surely, 2^18703140 is an apocalyptic number.

18703140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18703140 is an abundant number, since it is smaller than the sum of its proper divisors (35946588).

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

18703140 is a wasteful number, since it uses less digits than its factorization.

18703140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13588 (or 13586 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 18703140 is about 4324.7127072211. The cubic root of 18703140 is about 265.4431413099.

The spelling of 18703140 in words is "eighteen million, seven hundred three thousand, one hundred forty".