13257860 has 48 divisors (see below), whose sum is σ = 34715520. Its totient is φ = 4131840.

The previous prime is 13257833. The next prime is 13257869. The reversal of 13257860 is 6875231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13257869) 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, 2765 + ... + 5844.

It is an arithmetic number, because the mean of its divisors is an integer number (723240).

Almost surely, 2^13257860 is an apocalyptic number.

13257860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13257860 is an abundant number, since it is smaller than the sum of its proper divisors (21457660).

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

13257860 is a wasteful number, since it uses less digits than its factorization.

13257860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8636 (or 8634 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 13257860 is about 3641.1344386056. The cubic root of 13257860 is about 236.6779557753.

The spelling of 13257860 in words is "thirteen million, two hundred fifty-seven thousand, eight hundred sixty".