12400020304 has 20 divisors (see below), whose sum is σ = 27457188064. Its totient is φ = 5314294368.

The previous prime is 12400020299. The next prime is 12400020313. The reversal of 12400020304 is 40302000421.

It is a super-3 number, since 3×12400020304³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55357122 + ... + 55357345.

Almost surely, 2^12400020304 is an apocalyptic number.

12400020304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12400020304 is an abundant number, since it is smaller than the sum of its proper divisors (15057167760).

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

12400020304 is a wasteful number, since it uses less digits than its factorization.

12400020304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110714482 (or 110714476 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 12400020304 its reverse (40302000421), we get a palindrome (52702020725).

The spelling of 12400020304 in words is "twelve billion, four hundred million, twenty thousand, three hundred four".