13091830 has 16 divisors (see below), whose sum is σ = 24590304. Its totient is φ = 5008960.

The previous prime is 13091809. The next prime is 13091831. The reversal of 13091830 is 3819031.

It is a junction number, because it is equal to n+sod(n) for n = 13091795 and 13091804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13091831) 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, 28231 + ... + 28690.

It is an arithmetic number, because the mean of its divisors is an integer number (1536894).

Almost surely, 2^13091830 is an apocalyptic number.

13091830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13091830 is a deficient number, since it is larger than the sum of its proper divisors (11498474).

13091830 is a wasteful number, since it uses less digits than its factorization.

13091830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56951.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13091830 is about 3618.2633956085. The cubic root of 13091830 is about 235.6858191169.

The spelling of 13091830 in words is "thirteen million, ninety-one thousand, eight hundred thirty".