13434143220 has 84 divisors (see below), whose sum is σ = 42298247460. Its totient is φ = 3582434304.

The previous prime is 13434143197. The next prime is 13434143221. The reversal of 13434143220 is 2234143431.

13434143220 is a `hidden beast` number, since 1 + 3 + 434 + 1 + 4 + 3 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1571012496 + 11863130724 = 39636^2 + 108918^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13434143221) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 446125 + ... + 475284.

It is an arithmetic number, because the mean of its divisors is an integer number (503550565).

Almost surely, 2^13434143220 is an apocalyptic number.

13434143220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13434143220 is an abundant number, since it is smaller than the sum of its proper divisors (28864104240).

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

13434143220 is an equidigital number, since it uses as much as digits as its factorization.

13434143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921436 (or 921419 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 13434143220 its reverse (2234143431), we get a palindrome (15668286651).

The spelling of 13434143220 in words is "thirteen billion, four hundred thirty-four million, one hundred forty-three thousand, two hundred twenty".