12004351730 has 40 divisors (see below), whose sum is σ = 25207689132. Its totient is φ = 4115769504.

The previous prime is 12004351717. The next prime is 12004351781. The reversal of 12004351730 is 3715340021.

It can be written as a sum of positive squares in 2 ways, for example, as 11694908449 + 309443281 = 108143^2 + 17591^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12004351730.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 225977 + ... + 273996.

Almost surely, 2^12004351730 is an apocalyptic number.

12004351730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12004351730 is an abundant number, since it is smaller than the sum of its proper divisors (13203337402).

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

12004351730 is an frugal number, since it uses more digits than its factorization.

12004351730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500008 (or 499987 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 12004351730 its reverse (3715340021), we get a palindrome (15719691751).

The spelling of 12004351730 in words is "twelve billion, four million, three hundred fifty-one thousand, seven hundred thirty".