13072330 has 16 divisors (see below), whose sum is σ = 24342120. Its totient is φ = 5048512.

The previous prime is 13072327. The next prime is 13072343. The reversal of 13072330 is 3327031.

It can be written as a sum of positive squares in 4 ways, for example, as 10949481 + 2122849 = 3309^2 + 1457^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13072298 and 13072307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22249 + ... + 22828.

Almost surely, 2^13072330 is an apocalyptic number.

13072330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13072330 is a deficient number, since it is larger than the sum of its proper divisors (11269790).

13072330 is a wasteful number, since it uses less digits than its factorization.

13072330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45113.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 13072330 is about 3615.5677285870. The cubic root of 13072330 is about 235.5687446467.

Adding to 13072330 its reverse (3327031), we get a palindrome (16399361).

The spelling of 13072330 in words is "thirteen million, seventy-two thousand, three hundred thirty".