13272020 has 12 divisors (see below), whose sum is σ = 27871284. Its totient is φ = 5308800.

The previous prime is 13271981. The next prime is 13272023. The reversal of 13272020 is 2027231.

It can be written as a sum of positive squares in 2 ways, for example, as 1684804 + 11587216 = 1298^2 + 3404^2 .

It is a super-2 number, since 2×13272020² = 352293029760800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13272020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13272023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331781 + ... + 331820.

It is an arithmetic number, because the mean of its divisors is an integer number (2322607).

Almost surely, 2^13272020 is an apocalyptic number.

13272020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13272020 is an abundant number, since it is smaller than the sum of its proper divisors (14599264).

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

13272020 is a wasteful number, since it uses less digits than its factorization.

13272020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663610 (or 663608 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 13272020 is about 3643.0783686328. The cubic root of 13272020 is about 236.7621867504.

Adding to 13272020 its reverse (2027231), we get a palindrome (15299251).

The spelling of 13272020 in words is "thirteen million, two hundred seventy-two thousand, twenty".