13012240 has 40 divisors (see below), whose sum is σ = 30408768. Its totient is φ = 5178240.

The previous prime is 13012231. The next prime is 13012243. The reversal of 13012240 is 4221031.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 13012240.

It is not an unprimeable number, because it can be changed into a prime (13012243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24619 + ... + 25141.

Almost surely, 2^13012240 is an apocalyptic number.

13012240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012240 is an abundant number, since it is smaller than the sum of its proper divisors (17396528).

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

13012240 is a wasteful number, since it uses less digits than its factorization.

13012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

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

The square root of 13012240 is about 3607.2482587147. The cubic root of 13012240 is about 235.2072413585.

Adding to 13012240 its reverse (4221031), we get a palindrome (17233271).

The spelling of 13012240 in words is "thirteen million, twelve thousand, two hundred forty".