14220813 has 4 divisors (see below), whose sum is σ = 18961088. Its totient is φ = 9480540.

The previous prime is 14220799. The next prime is 14220827. The reversal of 14220813 is 31802241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (14220799) and next prime (14220827).

It is not a de Polignac number, because 14220813 - 2⁵ = 14220781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14220813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14220863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370133 + ... + 2370138.

It is an arithmetic number, because the mean of its divisors is an integer number (4740272).

Almost surely, 2^14220813 is an apocalyptic number.

It is an amenable number.

14220813 is a deficient number, since it is larger than the sum of its proper divisors (4740275).

14220813 is an equidigital number, since it uses as much as digits as its factorization.

14220813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4740274.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 14220813 is about 3771.0493234642. The cubic root of 14220813 is about 242.2747431756.

The spelling of 14220813 in words is "fourteen million, two hundred twenty thousand, eight hundred thirteen".