13085870 has 32 divisors (see below), whose sum is σ = 28339200. Its totient is φ = 4250016.

The previous prime is 13085867. The next prime is 13085879. The reversal of 13085870 is 7858031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13085879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3590 + ... + 6249.

It is an arithmetic number, because the mean of its divisors is an integer number (885600).

Almost surely, 2^13085870 is an apocalyptic number.

13085870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13085870 is an abundant number, since it is smaller than the sum of its proper divisors (15253330).

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

13085870 is a wasteful number, since it uses less digits than its factorization.

13085870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9872.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 13085870 is about 3617.4397023309. The cubic root of 13085870 is about 235.6500486988.

The spelling of 13085870 in words is "thirteen million, eighty-five thousand, eight hundred seventy".