12028636620 has 1296 divisors, whose sum is σ = 54739671840. Its totient is φ = 2171473920.

The previous prime is 12028636589. The next prime is 12028636657. The reversal of 12028636620 is 2663682021.

12028636620 is a `hidden beast` number, since 1 + 2 + 0 + 28 + 6 + 3 + 6 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 707566852 + ... + 707566868.

Almost surely, 2^12028636620 is an apocalyptic number.

12028636620 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 12028636620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27369835920).

12028636620 is an abundant number, since it is smaller than the sum of its proper divisors (42711035220).

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

12028636620 is a wasteful number, since it uses less digits than its factorization.

12028636620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 12028636620 in words is "twelve billion, twenty-eight million, six hundred thirty-six thousand, six hundred twenty".