1304444040 has 64 divisors (see below), whose sum is σ = 4039580160. Its totient is φ = 336629760.

The previous prime is 1304444023. The next prime is 1304444101. The reversal of 1304444040 is 404444031.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1304444040.

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, 171609 + ... + 179048.

It is an arithmetic number, because the mean of its divisors is an integer number (63118440).

Almost surely, 2^1304444040 is an apocalyptic number.

1304444040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304444040 is an abundant number, since it is smaller than the sum of its proper divisors (2735136120).

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

1304444040 is a wasteful number, since it uses less digits than its factorization.

1304444040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350702 (or 350698 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1304444040 is about 36117.0879224779. The cubic root of 1304444040 is about 1092.6351080142.

Adding to 1304444040 its reverse (404444031), we get a palindrome (1708888071).

Subtracting from 1304444040 its reverse (404444031), we obtain a palindrome (900000009).

The spelling of 1304444040 in words is "one billion, three hundred four million, four hundred forty-four thousand, forty".