1304401340 has 48 divisors (see below), whose sum is σ = 3051869184. Its totient is φ = 464232000.

The previous prime is 1304401339. The next prime is 1304401361. The reversal of 1304401340 is 431044031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 52736 + ... + 73415.

It is an arithmetic number, because the mean of its divisors is an integer number (63580608).

Almost surely, 2^1304401340 is an apocalyptic number.

1304401340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304401340 is an abundant number, since it is smaller than the sum of its proper divisors (1747467844).

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

1304401340 is a wasteful number, since it uses less digits than its factorization.

1304401340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126218 (or 126216 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1304401340 is about 36116.4967847104. The cubic root of 1304401340 is about 1092.6231856865.

Adding to 1304401340 its reverse (431044031), we get a palindrome (1735445371).

The spelling of 1304401340 in words is "one billion, three hundred four million, four hundred one thousand, three hundred forty".