14921720 has 48 divisors (see below), whose sum is σ = 36915480. Its totient is φ = 5424320.

The previous prime is 14921719. The next prime is 14921723. The reversal of 14921720 is 2712941.

It is a self number, because there is not a number n which added to its sum of digits gives 14921720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14921723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3299 + ... + 6381.

Almost surely, 2^14921720 is an apocalyptic number.

14921720 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 14921720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18457740).

14921720 is an abundant number, since it is smaller than the sum of its proper divisors (21993760).

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

14921720 is a wasteful number, since it uses less digits than its factorization.

14921720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 14921720 is about 3862.8642223097. The cubic root of 14921720 is about 246.1914476813.

The spelling of 14921720 in words is "fourteen million, nine hundred twenty-one thousand, seven hundred twenty".