14213540 has 72 divisors (see below), whose sum is σ = 34630848. Its totient is φ = 4850560.

The previous prime is 14213533. The next prime is 14213579. The reversal of 14213540 is 4531241.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 23 ways as a sum of consecutive naturals, for example, 268154 + ... + 268206.

It is an arithmetic number, because the mean of its divisors is an integer number (480984).

Almost surely, 2^14213540 is an apocalyptic number.

14213540 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 14213540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17315424).

14213540 is an abundant number, since it is smaller than the sum of its proper divisors (20417308).

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

14213540 is a wasteful number, since it uses less digits than its factorization.

14213540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 14213540 is about 3770.0848796811. The cubic root of 14213540 is about 242.2334336601.

Adding to 14213540 its reverse (4531241), we get a palindrome (18744781).

The spelling of 14213540 in words is "fourteen million, two hundred thirteen thousand, five hundred forty".