13321740 has 24 divisors (see below), whose sum is σ = 37301040. Its totient is φ = 3552448.

The previous prime is 13321699. The next prime is 13321741. The reversal of 13321740 is 4712331.

It is not an unprimeable number, because it can be changed into a prime (13321741) 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, 110955 + ... + 111074.

It is an arithmetic number, because the mean of its divisors is an integer number (1554210).

Almost surely, 2^13321740 is an apocalyptic number.

13321740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321740 is an abundant number, since it is smaller than the sum of its proper divisors (23979300).

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

13321740 is a wasteful number, since it uses less digits than its factorization.

13321740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222041 (or 222039 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13321740 is about 3649.8958889261. The cubic root of 13321740 is about 237.0574732875.

The spelling of 13321740 in words is "thirteen million, three hundred twenty-one thousand, seven hundred forty".