13117570 has 16 divisors (see below), whose sum is σ = 24426360. Its totient is φ = 5065984.

The previous prime is 13117561. The next prime is 13117571. The reversal of 13117570 is 7571131.

It can be written as a sum of positive squares in 4 ways, for example, as 12866569 + 251001 = 3587^2 + 501^2 .

It is not an unprimeable number, because it can be changed into a prime (13117571) 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, 22327 + ... + 22906.

Almost surely, 2^13117570 is an apocalyptic number.

13117570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13117570 is a deficient number, since it is larger than the sum of its proper divisors (11308790).

13117570 is a wasteful number, since it uses less digits than its factorization.

13117570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45269.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 13117570 is about 3621.8186039613. The cubic root of 13117570 is about 235.8401795457.

The spelling of 13117570 in words is "thirteen million, one hundred seventeen thousand, five hundred seventy".