12247920 has 60 divisors (see below), whose sum is σ = 41135016. Its totient is φ = 3265920.

The previous prime is 12247919. The next prime is 12247931. The reversal of 12247920 is 2974221.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7786 + ... + 9225.

Almost surely, 2^12247920 is an apocalyptic number.

12247920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12247920 is an abundant number, since it is smaller than the sum of its proper divisors (28887096).

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

12247920 is a wasteful number, since it uses less digits than its factorization.

12247920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17030 (or 17021 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12247920 is about 3499.7028445284. The cubic root of 12247920 is about 230.5087666433.

The spelling of 12247920 in words is "twelve million, two hundred forty-seven thousand, nine hundred twenty".