12447420 has 24 divisors (see below), whose sum is σ = 34852944. Its totient is φ = 3319296.

The previous prime is 12447401. The next prime is 12447469. The reversal of 12447420 is 2474421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103669 + ... + 103788.

It is an arithmetic number, because the mean of its divisors is an integer number (1452206).

Almost surely, 2^12447420 is an apocalyptic number.

12447420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12447420 is an abundant number, since it is smaller than the sum of its proper divisors (22405524).

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

12447420 is a wasteful number, since it uses less digits than its factorization.

12447420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207469 (or 207467 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 12447420 is about 3528.0901349030. The cubic root of 12447420 is about 231.7535780272.

The spelling of 12447420 in words is "twelve million, four hundred forty-seven thousand, four hundred twenty".