13722015 has 8 divisors (see below), whose sum is σ = 21955248. Its totient is φ = 7318400.

The previous prime is 13721993. The next prime is 13722019. The reversal of 13722015 is 51022731.

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

It is not a de Polignac number, because 13722015 - 2¹² = 13717919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13721982 and 13722000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13722019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457386 + ... + 457415.

It is an arithmetic number, because the mean of its divisors is an integer number (2744406).

Almost surely, 2^13722015 is an apocalyptic number.

13722015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13722015 is a deficient number, since it is larger than the sum of its proper divisors (8233233).

13722015 is an equidigital number, since it uses as much as digits as its factorization.

13722015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914809.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 13722015 is about 3704.3238249376. The cubic root of 13722015 is about 239.4083516941.

Adding to 13722015 its reverse (51022731), we get a palindrome (64744746).

The spelling of 13722015 in words is "thirteen million, seven hundred twenty-two thousand, fifteen".