14213720 has 16 divisors (see below), whose sum is σ = 31980960. Its totient is φ = 5685472.

The previous prime is 14213711. The next prime is 14213743. The reversal of 14213720 is 2731241.

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

It is a junction number, because it is equal to n+sod(n) for n = 14213692 and 14213701.

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 3 ways as a sum of consecutive naturals, for example, 177632 + ... + 177711.

It is an arithmetic number, because the mean of its divisors is an integer number (1998810).

Almost surely, 2^14213720 is an apocalyptic number.

14213720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14213720 is an abundant number, since it is smaller than the sum of its proper divisors (17767240).

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

14213720 is a wasteful number, since it uses less digits than its factorization.

14213720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355354 (or 355350 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 14213720 is about 3770.1087517471. The cubic root of 14213720 is about 242.2344562023.

Adding to 14213720 its reverse (2731241), we get a palindrome (16944961).

The spelling of 14213720 in words is "fourteen million, two hundred thirteen thousand, seven hundred twenty".