13230840 has 128 divisors (see below), whose sum is σ = 47808000. Its totient is φ = 2861568.

The previous prime is 13230827. The next prime is 13230851. The reversal of 13230840 is 4803231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15546 + ... + 16374.

It is an arithmetic number, because the mean of its divisors is an integer number (373500).

Almost surely, 2^13230840 is an apocalyptic number.

13230840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13230840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23904000).

13230840 is an abundant number, since it is smaller than the sum of its proper divisors (34577160).

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

13230840 is a wasteful number, since it uses less digits than its factorization.

13230840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 865 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13230840 is about 3637.4221641157. The cubic root of 13230840 is about 236.5170603334.

The spelling of 13230840 in words is "thirteen million, two hundred thirty thousand, eight hundred forty".