14215820 has 12 divisors (see below), whose sum is σ = 29853264. Its totient is φ = 5686320.

The previous prime is 14215793. The next prime is 14215837. The reversal of 14215820 is 2851241.

14215820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355376 + ... + 355415.

It is an arithmetic number, because the mean of its divisors is an integer number (2487772).

Almost surely, 2^14215820 is an apocalyptic number.

14215820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14215820 is an abundant number, since it is smaller than the sum of its proper divisors (15637444).

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

14215820 is a wasteful number, since it uses less digits than its factorization.

14215820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710800 (or 710798 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 14215820 is about 3770.3872480158. The cubic root of 14215820 is about 242.2463852237.

The spelling of 14215820 in words is "fourteen million, two hundred fifteen thousand, eight hundred twenty".