13012440 has 96 divisors (see below), whose sum is σ = 45431280. Its totient is φ = 2972928.

The previous prime is 13012427. The next prime is 13012471. The reversal of 13012440 is 4421031.

13012440 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 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 23 ways as a sum of consecutive naturals, for example, 4774 + ... + 6986.

Almost surely, 2^13012440 is an apocalyptic number.

13012440 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 13012440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22715640).

13012440 is an abundant number, since it is smaller than the sum of its proper divisors (32418840).

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

13012440 is a wasteful number, since it uses less digits than its factorization.

13012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241 (or 2230 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13012440 is about 3607.2759805704. The cubic root of 13012440 is about 235.2084464087.

Adding to 13012440 its reverse (4421031), we get a palindrome (17433471).

It can be divided in two parts, 1301 and 2440, that added together give a triangular number (3741 = T₈₆).

The spelling of 13012440 in words is "thirteen million, twelve thousand, four hundred forty".