13378724 has 6 divisors (see below), whose sum is σ = 23412774. Its totient is φ = 6689360.

The previous prime is 13378721. The next prime is 13378727. The reversal of 13378724 is 42787331.

It is an interprime number because it is at equal distance from previous prime (13378721) and next prime (13378727).

It can be written as a sum of positive squares in only one way, i.e., 12124324 + 1254400 = 3482^2 + 1120^2 .

It is not an unprimeable number, because it can be changed into a prime (13378721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1672337 + ... + 1672344.

It is an arithmetic number, because the mean of its divisors is an integer number (3902129).

Almost surely, 2^13378724 is an apocalyptic number.

It is an amenable number.

13378724 is a deficient number, since it is larger than the sum of its proper divisors (10034050).

13378724 is a wasteful number, since it uses less digits than its factorization.

13378724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344685 (or 3344683 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 13378724 is about 3657.6938089457. The cubic root of 13378724 is about 237.3949984598.

The spelling of 13378724 in words is "thirteen million, three hundred seventy-eight thousand, seven hundred twenty-four".