13922720 has 96 divisors (see below), whose sum is σ = 38900736. Its totient is φ = 4608000.

The previous prime is 13922717. The next prime is 13922731. The reversal of 13922720 is 2722931.

It is a self number, because there is not a number n which added to its sum of digits gives 13922720.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34520 + ... + 34920.

It is an arithmetic number, because the mean of its divisors is an integer number (405216).

Almost surely, 2^13922720 is an apocalyptic number.

13922720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13922720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19450368).

13922720 is an abundant number, since it is smaller than the sum of its proper divisors (24978016).

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

13922720 is a wasteful number, since it uses less digits than its factorization.

13922720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 13922720 is about 3731.3161216922. The cubic root of 13922720 is about 240.5699417516.

The spelling of 13922720 in words is "thirteen million, nine hundred twenty-two thousand, seven hundred twenty".