1304424044240 has 80 divisors (see below), whose sum is σ = 3168504452736. Its totient is φ = 498475507200.

The previous prime is 1304424044239. The next prime is 1304424044267. The reversal of 1304424044240 is 424404244031.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1304424044197 and 1304424044206.

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, 1078895 + ... + 1942385.

Almost surely, 2^{1304424044240} is an apocalyptic number.

1304424044240 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 1304424044240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1584252226368).

1304424044240 is an abundant number, since it is smaller than the sum of its proper divisors (1864080408496).

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

1304424044240 is a wasteful number, since it uses less digits than its factorization.

1304424044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864348 (or 864342 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 1304424044240 its reverse (424404244031), we get a palindrome (1728828288271).

The spelling of 1304424044240 in words is "one trillion, three hundred four billion, four hundred twenty-four million, forty-four thousand, two hundred forty".