1304403432440 has 64 divisors (see below), whose sum is σ = 2997869304960. Its totient is φ = 510572032000.

The previous prime is 1304403432433. The next prime is 1304403432467. The reversal of 1304403432440 is 442343044031.

It is a super-2 number, since 2×1304403432440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1304403432397 and 1304403432406.

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, 11435690 + ... + 11549190.

It is an arithmetic number, because the mean of its divisors is an integer number (46841707890).

Almost surely, 2^{1304403432440} is an apocalyptic number.

1304403432440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304403432440 is an abundant number, since it is smaller than the sum of its proper divisors (1693465872520).

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

1304403432440 is a wasteful number, since it uses less digits than its factorization.

1304403432440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119672 (or 119668 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 1304403432440 its reverse (442343044031), we get a palindrome (1746746476471).

The spelling of 1304403432440 in words is "one trillion, three hundred four billion, four hundred three million, four hundred thirty-two thousand, four hundred forty".