12384540 has 72 divisors (see below), whose sum is σ = 42937440. Its totient is φ = 2830464.

The previous prime is 12384539. The next prime is 12384569. The reversal of 12384540 is 4548321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3655 + ... + 6174.

Almost surely, 2^12384540 is an apocalyptic number.

12384540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12384540 is an abundant number, since it is smaller than the sum of its proper divisors (30552900).

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

12384540 is a wasteful number, since it uses less digits than its factorization.

12384540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9851 (or 9846 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 12384540 is about 3519.1675151945. The cubic root of 12384540 is about 231.3626731181.

It can be divided in two parts, 1238 and 4540, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 12384540 in words is "twelve million, three hundred eighty-four thousand, five hundred forty".