13502040 has 64 divisors (see below), whose sum is σ = 41614560. Its totient is φ = 3502080.

The previous prime is 13502011. The next prime is 13502089. The reversal of 13502040 is 4020531.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2920 + ... + 5960.

Almost surely, 2^13502040 is an apocalyptic number.

13502040 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 13502040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20807280).

13502040 is an abundant number, since it is smaller than the sum of its proper divisors (28112520).

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

13502040 is a wasteful number, since it uses less digits than its factorization.

13502040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092 (or 3088 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 13502040 is about 3674.5122125256. The cubic root of 13502040 is about 238.1221508880.

Adding to 13502040 its reverse (4020531), we get a palindrome (17522571).

The spelling of 13502040 in words is "thirteen million, five hundred two thousand, forty".