13657760 has 24 divisors (see below), whose sum is σ = 32266836. Its totient is φ = 5463040.

The previous prime is 13657759. The next prime is 13657769. The reversal of 13657760 is 6775631.

It can be written as a sum of positive squares in 2 ways, for example, as 13630864 + 26896 = 3692^2 + 164^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13657760.

It is not an unprimeable number, because it can be changed into a prime (13657769) 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, 42521 + ... + 42840.

Almost surely, 2^13657760 is an apocalyptic number.

13657760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13657760 is an abundant number, since it is smaller than the sum of its proper divisors (18609076).

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

13657760 is an equidigital number, since it uses as much as digits as its factorization.

13657760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85376 (or 85368 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 13657760 is about 3695.6406751739. The cubic root of 13657760 is about 239.0340806777.

The spelling of 13657760 in words is "thirteen million, six hundred fifty-seven thousand, seven hundred sixty".