12337220 has 36 divisors (see below), whose sum is σ = 30140460. Its totient is φ = 4229568.

The previous prime is 12337211. The next prime is 12337229. The reversal of 12337220 is 2273321.

It is an interprime number because it is at equal distance from previous prime (12337211) and next prime (12337229).

It can be written as a sum of positive squares in 2 ways, for example, as 2502724 + 9834496 = 1582^2 + 3136^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12337192 and 12337201.

It is not an unprimeable number, because it can be changed into a prime (12337229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5315 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (837235).

Almost surely, 2^12337220 is an apocalyptic number.

12337220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12337220 is an abundant number, since it is smaller than the sum of its proper divisors (17803240).

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

12337220 is a wasteful number, since it uses less digits than its factorization.

12337220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612 (or 12603 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 12337220 is about 3512.4378998069. The cubic root of 12337220 is about 231.0676263587.

The spelling of 12337220 in words is "twelve million, three hundred thirty-seven thousand, two hundred twenty".