13124440 has 64 divisors (see below), whose sum is σ = 35539200. Its totient is φ = 4261248.

The previous prime is 13124437. The next prime is 13124483. The reversal of 13124440 is 4442131.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 4087 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (555300).

Almost surely, 2^13124440 is an apocalyptic number.

13124440 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 13124440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17769600).

13124440 is an abundant number, since it is smaller than the sum of its proper divisors (22414760).

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

13124440 is a wasteful number, since it uses less digits than its factorization.

13124440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504 (or 2500 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 13124440 is about 3622.7668983803. The cubic root of 13124440 is about 235.8813441635.

Adding to 13124440 its reverse (4442131), we get a palindrome (17566571).

The spelling of 13124440 in words is "thirteen million, one hundred twenty-four thousand, four hundred forty".