1304400343532 has 72 divisors (see below), whose sum is σ = 2702658309120. Its totient is φ = 546052777920.

The previous prime is 1304400343513. The next prime is 1304400343537. The reversal of 1304400343532 is 2353430044031.

It is a super-2 number, since 2×1304400343532² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1304400343537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3064613 + ... + 3464195.

It is an arithmetic number, because the mean of its divisors is an integer number (37536920960).

Almost surely, 2^{1304400343532} is an apocalyptic number.

It is an amenable number.

1304400343532 is an abundant number, since it is smaller than the sum of its proper divisors (1398257965588).

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

1304400343532 is a wasteful number, since it uses less digits than its factorization.

1304400343532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400063 (or 400048 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 1304400343532 its reverse (2353430044031), we get a palindrome (3657830387563).

The spelling of 1304400343532 in words is "one trillion, three hundred four billion, four hundred million, three hundred forty-three thousand, five hundred thirty-two".