13579720 has 64 divisors (see below), whose sum is σ = 38102400. Its totient is φ = 4231680.

The previous prime is 13579697. The next prime is 13579721. The reversal of 13579720 is 2797531.

It is not an unprimeable number, because it can be changed into a prime (13579721) 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 15 ways as a sum of consecutive naturals, for example, 876 + ... + 5284.

It is an arithmetic number, because the mean of its divisors is an integer number (595350).

Almost surely, 2^13579720 is an apocalyptic number.

13579720 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 13579720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19051200).

13579720 is an abundant number, since it is smaller than the sum of its proper divisors (24522680).

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

13579720 is a wasteful number, since it uses less digits than its factorization.

13579720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4438 (or 4434 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 13579720 is about 3685.0671635670. The cubic root of 13579720 is about 238.5779330921.

The spelling of 13579720 in words is "thirteen million, five hundred seventy-nine thousand, seven hundred twenty".