13604040 has 192 divisors, whose sum is σ = 48522240. Its totient is φ = 3294720.

The previous prime is 13604033. The next prime is 13604051. The reversal of 13604040 is 4040631.

13604040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

13604040 is a modest number, since divided by 4040 gives 1360 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256654 + ... + 256706.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

Almost surely, 2^13604040 is an apocalyptic number.

13604040 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 13604040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24261120).

13604040 is an abundant number, since it is smaller than the sum of its proper divisors (34918200).

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

13604040 is a wasteful number, since it uses less digits than its factorization.

13604040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13604040 is about 3688.3654916507. The cubic root of 13604040 is about 238.7202716930.

Adding to 13604040 its reverse (4040631), we get a palindrome (17644671).

The spelling of 13604040 in words is "thirteen million, six hundred four thousand, forty".