13657748 has 12 divisors (see below), whose sum is σ = 25739700. Its totient is φ = 6303552.

The previous prime is 13657747. The next prime is 13657759. The reversal of 13657748 is 84775631.

It can be written as a sum of positive squares in 2 ways, for example, as 5750404 + 7907344 = 2398^2 + 2812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13657741) 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, 131273 + ... + 131376.

It is an arithmetic number, because the mean of its divisors is an integer number (2144975).

Almost surely, 2^13657748 is an apocalyptic number.

It is an amenable number.

13657748 is a deficient number, since it is larger than the sum of its proper divisors (12081952).

13657748 is a wasteful number, since it uses less digits than its factorization.

13657748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262666 (or 262664 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 13657748 is about 3695.6390516391. The cubic root of 13657748 is about 239.0340106708.

The spelling of 13657748 in words is "thirteen million, six hundred fifty-seven thousand, seven hundred forty-eight".