12028380 has 96 divisors (see below), whose sum is σ = 41470464. Its totient is φ = 2536704.

The previous prime is 12028361. The next prime is 12028399. The reversal of 12028380 is 8382021.

It is an interprime number because it is at equal distance from previous prime (12028361) and next prime (12028399).

It is a self number, because there is not a number n which added to its sum of digits gives 12028380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4359 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (431984).

Almost surely, 2^12028380 is an apocalyptic number.

12028380 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 12028380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20735232).

12028380 is an abundant number, since it is smaller than the sum of its proper divisors (29442084).

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

12028380 is a wasteful number, since it uses less digits than its factorization.

12028380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235 (or 2233 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12028380 is about 3468.1954962199. The cubic root of 12028380 is about 229.1231896952.

The spelling of 12028380 in words is "twelve million, twenty-eight thousand, three hundred eighty".