104003440 has 40 divisors (see below), whose sum is σ = 244046880. Its totient is φ = 41216256.

The previous prime is 104003407. The next prime is 104003441. The reversal of 104003440 is 44300401.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104003441) 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, 2757 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (6101172).

Almost surely, 2^104003440 is an apocalyptic number.

104003440 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 104003440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122023440).

104003440 is an abundant number, since it is smaller than the sum of its proper divisors (140043440).

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

104003440 is a wasteful number, since it uses less digits than its factorization.

104003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12049 (or 12043 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 104003440 is about 10198.2076856671. The cubic root of 104003440 is about 470.2721224814.

Adding to 104003440 its reverse (44300401), we get a palindrome (148303841).

The spelling of 104003440 in words is "one hundred four million, three thousand, four hundred forty".