18514340 has 24 divisors (see below), whose sum is σ = 41871480. Its totient is φ = 6835968.

The previous prime is 18514339. The next prime is 18514357. The reversal of 18514340 is 4341581.

It can be written as a sum of positive squares in 4 ways, for example, as 891136 + 17623204 = 944^2 + 4198^2 .

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

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, 35345 + ... + 35864.

It is an arithmetic number, because the mean of its divisors is an integer number (1744645).

Almost surely, 2^18514340 is an apocalyptic number.

18514340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18514340 is an abundant number, since it is smaller than the sum of its proper divisors (23357140).

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

18514340 is a wasteful number, since it uses less digits than its factorization.

18514340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71231 (or 71229 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 18514340 is about 4302.8293017502. The cubic root of 18514340 is about 264.5469415438.

The spelling of 18514340 in words is "eighteen million, five hundred fourteen thousand, three hundred forty".