13449520 has 120 divisors (see below), whose sum is σ = 37658304. Its totient is φ = 4451328.

The previous prime is 13449509. The next prime is 13449521. The reversal of 13449520 is 2594431.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (13449521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184204 + ... + 184276.

Almost surely, 2^13449520 is an apocalyptic number.

13449520 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 13449520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18829152).

13449520 is an abundant number, since it is smaller than the sum of its proper divisors (24208784).

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

13449520 is a wasteful number, since it uses less digits than its factorization.

13449520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13449520 is about 3667.3587225686. The cubic root of 13449520 is about 237.8130019018.

The spelling of 13449520 in words is "thirteen million, four hundred forty-nine thousand, five hundred twenty".