1204505440 has 48 divisors (see below), whose sum is σ = 2848236048. Its totient is φ = 481363456.

The previous prime is 1204505389. The next prime is 1204505447. The reversal of 1204505440 is 445054021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204505447) 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, 216939 + ... + 222421.

It is an arithmetic number, because the mean of its divisors is an integer number (59338251).

Almost surely, 2^1204505440 is an apocalyptic number.

1204505440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1204505440 is an abundant number, since it is smaller than the sum of its proper divisors (1643730608).

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

1204505440 is a wasteful number, since it uses less digits than its factorization.

1204505440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871 (or 6863 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1204505440 is about 34705.9856508931. The cubic root of 1204505440 is about 1063.9868372314.

Adding to 1204505440 its reverse (445054021), we get a palindrome (1649559461).

The spelling of 1204505440 in words is "one billion, two hundred four million, five hundred five thousand, four hundred forty".