12028146858 has 96 divisors (see below), whose sum is σ = 32406157056. Its totient is φ = 3139513344.

The previous prime is 12028146857. The next prime is 12028146943. The reversal of 12028146858 is 85864182021.

It is not an unprimeable number, because it can be changed into a prime (12028146853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121035 + ... + 196737.

It is an arithmetic number, because the mean of its divisors is an integer number (337564136).

Almost surely, 2^12028146858 is an apocalyptic number.

12028146858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12028146858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16203078528).

12028146858 is an abundant number, since it is smaller than the sum of its proper divisors (20378010198).

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

12028146858 is a wasteful number, since it uses less digits than its factorization.

12028146858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75828 (or 75825 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 12028146858 in words is "twelve billion, twenty-eight million, one hundred forty-six thousand, eight hundred fifty-eight".