13355520 has 160 divisors (see below), whose sum is σ = 44782848. Its totient is φ = 3391488.

The previous prime is 13355501. The next prime is 13355521. The reversal of 13355520 is 2555331.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13355521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284137 + ... + 284183.

Almost surely, 2^13355520 is an apocalyptic number.

13355520 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 13355520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22391424).

13355520 is an abundant number, since it is smaller than the sum of its proper divisors (31427328).

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

13355520 is an equidigital number, since it uses as much as digits as its factorization.

13355520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 13355520 is about 3654.5204883815. The cubic root of 13355520 is about 237.2576734238.

The spelling of 13355520 in words is "thirteen million, three hundred fifty-five thousand, five hundred twenty".