14220820 has 12 divisors (see below), whose sum is σ = 29863764. Its totient is φ = 5688320.

The previous prime is 14220799. The next prime is 14220827. The reversal of 14220820 is 2802241.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 11276164 = 1716^2 + 3358^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14220827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355501 + ... + 355540.

It is an arithmetic number, because the mean of its divisors is an integer number (2488647).

Almost surely, 2^14220820 is an apocalyptic number.

14220820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14220820 is an abundant number, since it is smaller than the sum of its proper divisors (15642944).

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

14220820 is a wasteful number, since it uses less digits than its factorization.

14220820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711050 (or 711048 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 14220820 is about 3771.0502515877. The cubic root of 14220820 is about 242.2747829278.

The spelling of 14220820 in words is "fourteen million, two hundred twenty thousand, eight hundred twenty".