13340020 has 24 divisors (see below), whose sum is σ = 28400904. Its totient is φ = 5262336.

The previous prime is 13340003. The next prime is 13340021. The reversal of 13340020 is 2004331.

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 13337104 = 54^2 + 3652^2 .

It is a super-2 number, since 2×13340020² = 355912267200800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109 + ... + 6028.

It is an arithmetic number, because the mean of its divisors is an integer number (1183371).

Almost surely, 2^13340020 is an apocalyptic number.

13340020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13340020 is an abundant number, since it is smaller than the sum of its proper divisors (15060884).

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

13340020 is a wasteful number, since it uses less digits than its factorization.

13340020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219 (or 9217 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13340020 is about 3652.3992114773. The cubic root of 13340020 is about 237.1658532746.

Adding to 13340020 its reverse (2004331), we get a palindrome (15344351).

The spelling of 13340020 in words is "thirteen million, three hundred forty thousand, twenty".