12247940 has 24 divisors (see below), whose sum is σ = 26076120. Its totient is φ = 4831488.

The previous prime is 12247931. The next prime is 12247981. The reversal of 12247940 is 4974221.

12247940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3474496 + 8773444 = 1864^2 + 2962^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2735 + ... + 5654.

It is an arithmetic number, because the mean of its divisors is an integer number (1086505).

Almost surely, 2^12247940 is an apocalyptic number.

12247940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12247940 is an abundant number, since it is smaller than the sum of its proper divisors (13828180).

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

12247940 is a wasteful number, since it uses less digits than its factorization.

12247940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8471 (or 8469 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12247940 is about 3499.7057019127. The cubic root of 12247940 is about 230.5088921115.

The spelling of 12247940 in words is "twelve million, two hundred forty-seven thousand, nine hundred forty".