13309830 has 48 divisors (see below), whose sum is σ = 35459424. Its totient is φ = 3461760.

The previous prime is 13309817. The next prime is 13309853. The reversal of 13309830 is 3890331.

13309830 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13309794 and 13309803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1887 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (738738).

Almost surely, 2^13309830 is an apocalyptic number.

13309830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13309830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17729712).

13309830 is an abundant number, since it is smaller than the sum of its proper divisors (22149594).

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

13309830 is a wasteful number, since it uses less digits than its factorization.

13309830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3658 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13309830 is about 3648.2639707126. The cubic root of 13309830 is about 236.9868069353.

The spelling of 13309830 in words is "thirteen million, three hundred nine thousand, eight hundred thirty".