13227720 has 96 divisors (see below), whose sum is σ = 43666560. Its totient is φ = 3203200.

The previous prime is 13227719. The next prime is 13227749. The reversal of 13227720 is 2772231.

13227720 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14065 + ... + 14975.

It is an arithmetic number, because the mean of its divisors is an integer number (454860).

Almost surely, 2^13227720 is an apocalyptic number.

13227720 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 13227720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21833280).

13227720 is an abundant number, since it is smaller than the sum of its proper divisors (30438840).

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

13227720 is a wasteful number, since it uses less digits than its factorization.

13227720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 13227720 is about 3636.9932636726. The cubic root of 13227720 is about 236.4984676302.

13227720 divided by its sum of digits (24) gives a palindrome (551155).

Adding to 13227720 its reverse (2772231), we get a palindrome (15999951).

The spelling of 13227720 in words is "thirteen million, two hundred twenty-seven thousand, seven hundred twenty".