13173870 has 32 divisors (see below), whose sum is σ = 31830048. Its totient is φ = 3489408.

The previous prime is 13173841. The next prime is 13173877. The reversal of 13173870 is 7837131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13173877) 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, 3312 + ... + 6108.

It is an arithmetic number, because the mean of its divisors is an integer number (994689).

Almost surely, 2^13173870 is an apocalyptic number.

13173870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13173870 is an abundant number, since it is smaller than the sum of its proper divisors (18656178).

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

13173870 is a wasteful number, since it uses less digits than its factorization.

13173870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 13173870 is about 3629.5826206328. The cubic root of 13173870 is about 236.1771030097.

The spelling of 13173870 in words is "thirteen million, one hundred seventy-three thousand, eight hundred seventy".