13170020 has 24 divisors (see below), whose sum is σ = 28333368. Its totient is φ = 5139200.

The previous prime is 13169999. The next prime is 13170029. The reversal of 13170020 is 2007131.

13170020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1170724 + 11999296 = 1082^2 + 3464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13169977 and 13170004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13170029) 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, 7211 + ... + 8850.

It is an arithmetic number, because the mean of its divisors is an integer number (1180557).

Almost surely, 2^13170020 is an apocalyptic number.

13170020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13170020 is an abundant number, since it is smaller than the sum of its proper divisors (15163348).

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

13170020 is a wasteful number, since it uses less digits than its factorization.

13170020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111 (or 16109 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 13170020 is about 3629.0522178663. The cubic root of 13170020 is about 236.1540935615.

Adding to 13170020 its reverse (2007131), we get a palindrome (15177151).

The spelling of 13170020 in words is "thirteen million, one hundred seventy thousand, twenty".