13238040 has 64 divisors (see below), whose sum is σ = 40124160. Its totient is φ = 3493760.

The previous prime is 13238011. The next prime is 13238047. The reversal of 13238040 is 4083231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13237998 and 13238016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12325 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (626940).

Almost surely, 2^13238040 is an apocalyptic number.

13238040 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 13238040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20062080).

13238040 is an abundant number, since it is smaller than the sum of its proper divisors (26886120).

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

13238040 is a wasteful number, since it uses less digits than its factorization.

13238040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152 (or 1148 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13238040 is about 3638.4117414059. The cubic root of 13238040 is about 236.5599554186.

The spelling of 13238040 in words is "thirteen million, two hundred thirty-eight thousand, forty".