13570040 has 32 divisors (see below), whose sum is σ = 33309360. Its totient is φ = 4934400.

The previous prime is 13570031. The next prime is 13570049. The reversal of 13570040 is 4007531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13570031) and next prime (13570049).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 13569994 and 13570021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13570049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14981 + ... + 15860.

Almost surely, 2^13570040 is an apocalyptic number.

13570040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13570040 is an abundant number, since it is smaller than the sum of its proper divisors (19739320).

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

13570040 is a wasteful number, since it uses less digits than its factorization.

13570040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30863 (or 30859 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 13570040 is about 3683.7535205277. The cubic root of 13570040 is about 238.5212313007.

Adding to 13570040 its reverse (4007531), we get a palindrome (17577571).

The spelling of 13570040 in words is "thirteen million, five hundred seventy thousand, forty".