12345380 has 12 divisors (see below), whose sum is σ = 25925340. Its totient is φ = 4938144.

The previous prime is 12345379. The next prime is 12345397. The reversal of 12345380 is 8354321.

It can be written as a sum of positive squares in 2 ways, for example, as 4804864 + 7540516 = 2192^2 + 2746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308615 + ... + 308654.

It is an arithmetic number, because the mean of its divisors is an integer number (2160445).

Almost surely, 2^12345380 is an apocalyptic number.

12345380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12345380 is an abundant number, since it is smaller than the sum of its proper divisors (13579960).

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

12345380 is a wasteful number, since it uses less digits than its factorization.

12345380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617278 (or 617276 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12345380 is about 3513.5992941711. The cubic root of 12345380 is about 231.1185588563.

The spelling of 12345380 in words is "twelve million, three hundred forty-five thousand, three hundred eighty".