13023240 has 64 divisors (see below), whose sum is σ = 40037760. Its totient is φ = 3386880.

The previous prime is 13023203. The next prime is 13023251. The reversal of 13023240 is 4232031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3597 + ... + 6243.

It is an arithmetic number, because the mean of its divisors is an integer number (625590).

Almost surely, 2^13023240 is an apocalyptic number.

13023240 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 13023240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20018880).

13023240 is an abundant number, since it is smaller than the sum of its proper divisors (27014520).

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

13023240 is a wasteful number, since it uses less digits than its factorization.

13023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 13023240 is about 3608.7726445427. The cubic root of 13023240 is about 235.2735007916.

Adding to 13023240 its reverse (4232031), we get a palindrome (17255271).

The spelling of 13023240 in words is "thirteen million, twenty-three thousand, two hundred forty".