12404385 has 48 divisors (see below), whose sum is σ = 25069824. Its totient is φ = 5556096.

The previous prime is 12404369. The next prime is 12404387. The reversal of 12404385 is 58340421.

12404385 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12404385 - 2⁴ = 12404369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12404387) 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, 16324 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (522288).

Almost surely, 2^12404385 is an apocalyptic number.

12404385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12404385 is an abundant number, since it is smaller than the sum of its proper divisors (12665439).

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

12404385 is a wasteful number, since it uses less digits than its factorization.

12404385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 811 counting only the distinct ones).

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

The square root of 12404385 is about 3521.9859454575. The cubic root of 12404385 is about 231.4861857667.

It can be divided in two parts, 1240 and 4385, that added together give a square (5625 = 75²).

The spelling of 12404385 in words is "twelve million, four hundred four thousand, three hundred eighty-five".