13121760 has 48 divisors (see below), whose sum is σ = 41335056. Its totient is φ = 3499008.

The previous prime is 13121743. The next prime is 13121803. The reversal of 13121760 is 6712131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13189 + ... + 14148.

It is an arithmetic number, because the mean of its divisors is an integer number (861147).

Almost surely, 2^13121760 is an apocalyptic number.

13121760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121760 is an abundant number, since it is smaller than the sum of its proper divisors (28213296).

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

13121760 is a wasteful number, since it uses less digits than its factorization.

13121760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27355 (or 27347 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 13121760 is about 3622.3969964652. The cubic root of 13121760 is about 235.8652874775.

Adding to 13121760 its reverse (6712131), we get a palindrome (19833891).

The spelling of 13121760 in words is "thirteen million, one hundred twenty-one thousand, seven hundred sixty".