14920721 has 8 divisors (see below), whose sum is σ = 15790464. Its totient is φ = 14069440.

The previous prime is 14920709. The next prime is 14920723. The reversal of 14920721 is 12702941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14920721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14920723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2936 + ... + 6201.

It is an arithmetic number, because the mean of its divisors is an integer number (1973808).

Almost surely, 2^14920721 is an apocalyptic number.

It is an amenable number.

14920721 is a deficient number, since it is larger than the sum of its proper divisors (869743).

14920721 is an equidigital number, since it uses as much as digits as its factorization.

14920721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9231.

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

The square root of 14920721 is about 3862.7349119503. The cubic root of 14920721 is about 246.1859534366.

The spelling of 14920721 in words is "fourteen million, nine hundred twenty thousand, seven hundred twenty-one".