13247040 has 56 divisors (see below), whose sum is σ = 42062400. Its totient is φ = 3532288.

The previous prime is 13247023. The next prime is 13247041. The reversal of 13247040 is 4074231.

It is a junction number, because it is equal to n+sod(n) for n = 13246998 and 13247016.

It is not an unprimeable number, because it can be changed into a prime (13247041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5940 + ... + 7859.

Almost surely, 2^13247040 is an apocalyptic number.

13247040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13247040 is an abundant number, since it is smaller than the sum of its proper divisors (28815360).

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

13247040 is a wasteful number, since it uses less digits than its factorization.

13247040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13819 (or 13809 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 13247040 is about 3639.6483346609. The cubic root of 13247040 is about 236.6135524087.

The spelling of 13247040 in words is "thirteen million, two hundred forty-seven thousand, forty".