13447980 has 144 divisors (see below), whose sum is σ = 50266944. Its totient is φ = 2833920.

The previous prime is 13447963. The next prime is 13447997. The reversal of 13447980 is 8974431.

It is a happy number.

13447980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13447963) and next prime (13447997).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 15970 + ... + 16790.

It is an arithmetic number, because the mean of its divisors is an integer number (349076).

Almost surely, 2^13447980 is an apocalyptic number.

13447980 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 13447980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25133472).

13447980 is an abundant number, since it is smaller than the sum of its proper divisors (36818964).

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

13447980 is a wasteful number, since it uses less digits than its factorization.

13447980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 13447980 is about 3667.1487561865. The cubic root of 13447980 is about 237.8039248492.

The spelling of 13447980 in words is "thirteen million, four hundred forty-seven thousand, nine hundred eighty".