12283720 has 16 divisors (see below), whose sum is σ = 27638460. Its totient is φ = 4913472.

The previous prime is 12283717. The next prime is 12283727. The reversal of 12283720 is 2738221.

It can be written as a sum of positive squares in 2 ways, for example, as 10588516 + 1695204 = 3254^2 + 1302^2 .

It is not an unprimeable number, because it can be changed into a prime (12283727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153507 + ... + 153586.

Almost surely, 2^12283720 is an apocalyptic number.

12283720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12283720 is an abundant number, since it is smaller than the sum of its proper divisors (15354740).

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

12283720 is a wasteful number, since it uses less digits than its factorization.

12283720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307104 (or 307100 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12283720 is about 3504.8138324310. The cubic root of 12283720 is about 230.7331363491.

The spelling of 12283720 in words is "twelve million, two hundred eighty-three thousand, seven hundred twenty".