12020032400 has 60 divisors (see below), whose sum is σ = 28972489392. Its totient is φ = 4792302720.

The previous prime is 12020032399. The next prime is 12020032429. The reversal of 12020032400 is 423002021.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73859 + ... + 171741.

Almost surely, 2^12020032400 is an apocalyptic number.

12020032400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020032400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14486244696).

12020032400 is an abundant number, since it is smaller than the sum of its proper divisors (16952456992).

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

12020032400 is a wasteful number, since it uses less digits than its factorization.

12020032400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98208 (or 98197 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 12020032400 its reverse (423002021), we get a palindrome (12443034421).

The spelling of 12020032400 in words is "twelve billion, twenty million, thirty-two thousand, four hundred".