13446720 has 336 divisors, whose sum is σ = 57058560. Its totient is φ = 2838528.

The previous prime is 13446709. The next prime is 13446739. The reversal of 13446720 is 2764431.

It is a tau number, because it is divible by the number of its divisors (336).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 463666 + ... + 463694.

Almost surely, 2^13446720 is an apocalyptic number.

13446720 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 13446720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28529280).

13446720 is an abundant number, since it is smaller than the sum of its proper divisors (43611840).

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

13446720 is a wasteful number, since it uses less digits than its factorization.

13446720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 13446720 is about 3666.9769565679. The cubic root of 13446720 is about 237.7964976544.

The spelling of 13446720 in words is "thirteen million, four hundred forty-six thousand, seven hundred twenty".