12026020428 has 72 divisors (see below), whose sum is σ = 31621087680. Its totient is φ = 3996455760.

The previous prime is 12026020361. The next prime is 12026020451. The reversal of 12026020428 is 82402062021.

It is a happy number.

12026020428 is a `hidden beast` number, since 12 + 0 + 2 + 602 + 0 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303043 + ... + 340421.

Almost surely, 2^12026020428 is an apocalyptic number.

12026020428 is a gapful number since it is divisible by the number (18) 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 12026020428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15810543840).

12026020428 is an abundant number, since it is smaller than the sum of its proper divisors (19595067252).

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

12026020428 is a wasteful number, since it uses less digits than its factorization.

12026020428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37729 (or 37715 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 12026020428 its reverse (82402062021), we get a palindrome (94428082449).

The spelling of 12026020428 in words is "twelve billion, twenty-six million, twenty thousand, four hundred twenty-eight".