12243040 has 24 divisors (see below), whose sum is σ = 28924560. Its totient is φ = 4897152.

The previous prime is 12243029. The next prime is 12243071. The reversal of 12243040 is 4034221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38100 + ... + 38419.

It is an arithmetic number, because the mean of its divisors is an integer number (1205190).

Almost surely, 2^12243040 is an apocalyptic number.

12243040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12243040 is an abundant number, since it is smaller than the sum of its proper divisors (16681520).

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

12243040 is an equidigital number, since it uses as much as digits as its factorization.

12243040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76534 (or 76526 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12243040 is about 3499.0055730164. The cubic root of 12243040 is about 230.4781483230.

Adding to 12243040 its reverse (4034221), we get a palindrome (16277261).

The spelling of 12243040 in words is "twelve million, two hundred forty-three thousand, forty".