12020023400 has 384 divisors, whose sum is σ = 37685088000. Its totient is φ = 3522355200.

The previous prime is 12020023391. The next prime is 12020023403. The reversal of 12020023400 is 432002021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020023403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12827732 + ... + 12828668.

It is an arithmetic number, because the mean of its divisors is an integer number (98138250).

Almost surely, 2^12020023400 is an apocalyptic number.

12020023400 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 12020023400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18842544000).

12020023400 is an abundant number, since it is smaller than the sum of its proper divisors (25665064600).

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

12020023400 is a wasteful number, since it uses less digits than its factorization.

12020023400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 979 counting only the distinct ones).

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

Adding to 12020023400 its reverse (432002021), we get a palindrome (12452025421).

The spelling of 12020023400 in words is "twelve billion, twenty million, twenty-three thousand, four hundred".