13147520 has 32 divisors (see below), whose sum is σ = 31432320. Its totient is φ = 5258752.

The previous prime is 13147493. The next prime is 13147523. The reversal of 13147520 is 2574131.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13147523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9632 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (982260).

Almost surely, 2^13147520 is an apocalyptic number.

13147520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13147520 is an abundant number, since it is smaller than the sum of its proper divisors (18284800).

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

13147520 is an equidigital number, since it uses as much as digits as its factorization.

13147520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20562 (or 20550 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 13147520 is about 3625.9509097615. The cubic root of 13147520 is about 236.0195329998.

The spelling of 13147520 in words is "thirteen million, one hundred forty-seven thousand, five hundred twenty".