14221940 has 12 divisors (see below), whose sum is σ = 29866116. Its totient is φ = 5688768.

The previous prime is 14221903. The next prime is 14221973. The reversal of 14221940 is 4912241.

It can be written as a sum of positive squares in 2 ways, for example, as 2347024 + 11874916 = 1532^2 + 3446^2 .

It is a congruent number.

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, 355529 + ... + 355568.

It is an arithmetic number, because the mean of its divisors is an integer number (2488843).

Almost surely, 2^14221940 is an apocalyptic number.

14221940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14221940 is an abundant number, since it is smaller than the sum of its proper divisors (15644176).

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

14221940 is a wasteful number, since it uses less digits than its factorization.

14221940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711106 (or 711104 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 14221940 is about 3771.1987484088. The cubic root of 14221940 is about 242.2811431009.

The spelling of 14221940 in words is "fourteen million, two hundred twenty-one thousand, nine hundred forty".