14271640 has 32 divisors (see below), whose sum is σ = 32982480. Its totient is φ = 5553792.

The previous prime is 14271629. The next prime is 14271671. The reversal of 14271640 is 4617241.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3342 + ... + 6301.

Almost surely, 2^14271640 is an apocalyptic number.

14271640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14271640 is an abundant number, since it is smaller than the sum of its proper divisors (18710840).

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

14271640 is a wasteful number, since it uses less digits than its factorization.

14271640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9691 (or 9687 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 14271640 is about 3777.7824182978. The cubic root of 14271640 is about 242.5630402585.

Adding to 14271640 its reverse (4617241), we get a palindrome (18888881).

The spelling of 14271640 in words is "fourteen million, two hundred seventy-one thousand, six hundred forty".