13120240 has 60 divisors (see below), whose sum is σ = 35495496. Its totient is φ = 4497024.

The previous prime is 13120231. The next prime is 13120253. The reversal of 13120240 is 4202131.

It is a self number, because there is not a number n which added to its sum of digits gives 13120240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2247 + ... + 5593.

Almost surely, 2^13120240 is an apocalyptic number.

13120240 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 13120240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17747748).

13120240 is an abundant number, since it is smaller than the sum of its proper divisors (22375256).

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

13120240 is a wasteful number, since it uses less digits than its factorization.

13120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374 (or 3361 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13120240 is about 3622.1871845613. The cubic root of 13120240 is about 235.8561797287.

Adding to 13120240 its reverse (4202131), we get a palindrome (17322371).

The spelling of 13120240 in words is "thirteen million, one hundred twenty thousand, two hundred forty".