13143620 has 48 divisors (see below), whose sum is σ = 31761408. Its totient is φ = 4475520.

The previous prime is 13143619. The next prime is 13143661. The reversal of 13143620 is 2634131.

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

It is a junction number, because it is equal to n+sod(n) for n = 13143592 and 13143601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31010 + ... + 31430.

It is an arithmetic number, because the mean of its divisors is an integer number (661696).

Almost surely, 2^13143620 is an apocalyptic number.

13143620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13143620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15880704).

13143620 is an abundant number, since it is smaller than the sum of its proper divisors (18617788).

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

13143620 is a wasteful number, since it uses less digits than its factorization.

13143620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13143620 is about 3625.4130799124. The cubic root of 13143620 is about 235.9961935611.

Adding to 13143620 its reverse (2634131), we get a palindrome (15777751).

The spelling of 13143620 in words is "thirteen million, one hundred forty-three thousand, six hundred twenty".