13038940 has 24 divisors (see below), whose sum is σ = 28823760. Its totient is φ = 4940928.

The previous prime is 13038931. The next prime is 13038947. The reversal of 13038940 is 4983031.

It is a junction number, because it is equal to n+sod(n) for n = 13038899 and 13038908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13038947) 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, 16777 + ... + 17536.

It is an arithmetic number, because the mean of its divisors is an integer number (1200990).

Almost surely, 2^13038940 is an apocalyptic number.

13038940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13038940 is an abundant number, since it is smaller than the sum of its proper divisors (15784820).

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

13038940 is a wasteful number, since it uses less digits than its factorization.

13038940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34341 (or 34339 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13038940 is about 3610.9472441452. The cubic root of 13038940 is about 235.3680064758.

The spelling of 13038940 in words is "thirteen million, thirty-eight thousand, nine hundred forty".