13021330 has 16 divisors (see below), whose sum is σ = 26786880. Its totient is φ = 4464432.

The previous prime is 13021277. The next prime is 13021331. The reversal of 13021330 is 3312031.

It is a self number, because there is not a number n which added to its sum of digits gives 13021330.

It is not an unprimeable number, because it can be changed into a prime (13021331) 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, 92940 + ... + 93079.

It is an arithmetic number, because the mean of its divisors is an integer number (1674180).

Almost surely, 2^13021330 is an apocalyptic number.

13021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13021330 is an abundant number, since it is smaller than the sum of its proper divisors (13765550).

13021330 is a wasteful number, since it uses less digits than its factorization.

13021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186033.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13021330 is about 3608.5080019310. The cubic root of 13021330 is about 235.2619984221.

Adding to 13021330 its reverse (3312031), we get a palindrome (16333361).

The spelling of 13021330 in words is "thirteen million, twenty-one thousand, three hundred thirty".