13447680 has 160 divisors (see below), whose sum is σ = 45961344. Its totient is φ = 3342336.

The previous prime is 13447673. The next prime is 13447699. The reversal of 13447680 is 8674431.

It is a tau number, because it is divible by the number of its divisors (160).

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, 130509 + ... + 130611.

Almost surely, 2^13447680 is an apocalyptic number.

13447680 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 13447680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22980672).

13447680 is an abundant number, since it is smaller than the sum of its proper divisors (32513664).

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

13447680 is a wasteful number, since it uses less digits than its factorization.

13447680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 13447680 is about 3667.1078522454. The cubic root of 13447680 is about 237.8021565116.

The spelling of 13447680 in words is "thirteen million, four hundred forty-seven thousand, six hundred eighty".