13368720 has 80 divisors (see below), whose sum is σ = 42265152. Its totient is φ = 3494400.

The previous prime is 13368713. The next prime is 13368731. The reversal of 13368720 is 2786331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12195 + ... + 13245.

Almost surely, 2^13368720 is an apocalyptic number.

13368720 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 13368720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21132576).

13368720 is an abundant number, since it is smaller than the sum of its proper divisors (28896432).

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

13368720 is a wasteful number, since it uses less digits than its factorization.

13368720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13368720 is about 3656.3260248506. The cubic root of 13368720 is about 237.3358126521.

The spelling of 13368720 in words is "thirteen million, three hundred sixty-eight thousand, seven hundred twenty".