13197744 has 60 divisors (see below), whose sum is σ = 42215056. Its totient is φ = 3770496.

The previous prime is 13197739. The next prime is 13197749. The reversal of 13197744 is 44779131.

It is an interprime number because it is at equal distance from previous prime (13197739) and next prime (13197749).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13197699 and 13197708.

It is not an unprimeable number, because it can be changed into a prime (13197749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5539 + ... + 7554.

Almost surely, 2^13197744 is an apocalyptic number.

13197744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13197744 is an abundant number, since it is smaller than the sum of its proper divisors (29017312).

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

13197744 is a wasteful number, since it uses less digits than its factorization.

13197744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13114 (or 13105 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 13197744 is about 3632.8699398685. The cubic root of 13197744 is about 236.3196854985.

The spelling of 13197744 in words is "thirteen million, one hundred ninety-seven thousand, seven hundred forty-four".