13347720 has 128 divisors (see below), whose sum is σ = 47174400. Its totient is φ = 3345408.

The previous prime is 13347707. The next prime is 13347727. The reversal of 13347720 is 2774331.

13347720 is digitally balanced in base 2, because in such base 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 (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13347727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17997 + ... + 18723.

It is an arithmetic number, because the mean of its divisors is an integer number (368550).

Almost surely, 2^13347720 is an apocalyptic number.

13347720 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 13347720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587200).

13347720 is an abundant number, since it is smaller than the sum of its proper divisors (33826680).

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

13347720 is a wasteful number, since it uses less digits than its factorization.

13347720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 754 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 13347720 is about 3653.4531610519. The cubic root of 13347720 is about 237.2114760403.

The spelling of 13347720 in words is "thirteen million, three hundred forty-seven thousand, seven hundred twenty".