13003740 has 120 divisors (see below), whose sum is σ = 42688800. Its totient is φ = 3307392.

The previous prime is 13003703. The next prime is 13003741. The reversal of 13003740 is 4730031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13003741) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 37086 + ... + 37434.

It is an arithmetic number, because the mean of its divisors is an integer number (355740).

Almost surely, 2^13003740 is an apocalyptic number.

13003740 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 13003740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21344400).

13003740 is an abundant number, since it is smaller than the sum of its proper divisors (29685060).

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

13003740 is a wasteful number, since it uses less digits than its factorization.

13003740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 13003740 is about 3606.0698828503. The cubic root of 13003740 is about 235.1560153068.

Adding to 13003740 its reverse (4730031), we get a palindrome (17733771).

The spelling of 13003740 in words is "thirteen million, three thousand, seven hundred forty".