13001240 has 64 divisors (see below), whose sum is σ = 34041600. Its totient is φ = 4376448.

The previous prime is 13001239. The next prime is 13001269. The reversal of 13001240 is 4210031.

It is a happy number.

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, 16127 + ... + 16913.

It is an arithmetic number, because the mean of its divisors is an integer number (531900).

Almost surely, 2^13001240 is an apocalyptic number.

13001240 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 13001240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17020800).

13001240 is an abundant number, since it is smaller than the sum of its proper divisors (21040360).

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

13001240 is a wasteful number, since it uses less digits than its factorization.

13001240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 13001240 is about 3605.7232284245. The cubic root of 13001240 is about 235.1409445729.

Adding to 13001240 its reverse (4210031), we get a palindrome (17211271).

The spelling of 13001240 in words is "thirteen million, one thousand, two hundred forty".