14161840 has 160 divisors (see below), whose sum is σ = 43568640. Its totient is φ = 4181760.

The previous prime is 14161817. The next prime is 14161843. The reversal of 14161840 is 4816141.

14161840 = 314² + 315² + ... + 418².

It is not an unprimeable number, because it can be changed into a prime (14161843) 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 31 ways as a sum of consecutive naturals, for example, 745351 + ... + 745369.

It is an arithmetic number, because the mean of its divisors is an integer number (272304).

Almost surely, 2^14161840 is an apocalyptic number.

14161840 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 14161840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21784320).

14161840 is an abundant number, since it is smaller than the sum of its proper divisors (29406800).

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

14161840 is a wasteful number, since it uses less digits than its factorization.

14161840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 14161840 is about 3763.2220237451. Note that the first 3 decimals coincide. The cubic root of 14161840 is about 241.9393787550.

Adding to 14161840 its reverse (4816141), we get a palindrome (18977981).

The spelling of 14161840 in words is "fourteen million, one hundred sixty-one thousand, eight hundred forty".