12105380 has 24 divisors (see below), whose sum is σ = 29053248. Its totient is φ = 4150368.

The previous prime is 12105361. The next prime is 12105391. The reversal of 12105380 is 8350121.

12105380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43094 + ... + 43373.

It is an arithmetic number, because the mean of its divisors is an integer number (1210552).

Almost surely, 2^12105380 is an apocalyptic number.

12105380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12105380 is an abundant number, since it is smaller than the sum of its proper divisors (16947868).

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

12105380 is a wasteful number, since it uses less digits than its factorization.

12105380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86483 (or 86481 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12105380 is about 3479.2786608721. The cubic root of 12105380 is about 229.6110628929.

The spelling of 12105380 in words is "twelve million, one hundred five thousand, three hundred eighty".