14181540 has 48 divisors (see below), whose sum is σ = 40279680. Its totient is φ = 3727360.

The previous prime is 14181533. The next prime is 14181623. The reversal of 14181540 is 4518141.

It is a super-2 number, since 2×14181540² = 402232153543200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14181540.

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, 2596 + ... + 5924.

It is an arithmetic number, because the mean of its divisors is an integer number (839160).

Almost surely, 2^14181540 is an apocalyptic number.

14181540 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 14181540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20139840).

14181540 is an abundant number, since it is smaller than the sum of its proper divisors (26098140).

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

14181540 is a wasteful number, since it uses less digits than its factorization.

14181540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412 (or 3410 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 14181540 is about 3765.8385520359. The cubic root of 14181540 is about 242.0515110165.

Adding to 14181540 its reverse (4518141), we get a palindrome (18699681).

The spelling of 14181540 in words is "fourteen million, one hundred eighty-one thousand, five hundred forty".