12662240 has 24 divisors (see below), whose sum is σ = 29914920. Its totient is φ = 5064832.

The previous prime is 12662239. The next prime is 12662257. The reversal of 12662240 is 4226621.

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, 39410 + ... + 39729.

It is an arithmetic number, because the mean of its divisors is an integer number (1246455).

Almost surely, 2^12662240 is an apocalyptic number.

12662240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12662240 is an abundant number, since it is smaller than the sum of its proper divisors (17252680).

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

12662240 is an equidigital number, since it uses as much as digits as its factorization.

12662240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79154 (or 79146 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 12662240 is about 3558.4041366882. The cubic root of 12662240 is about 233.0791972299.

Adding to 12662240 its reverse (4226621), we get a palindrome (16888861).

The spelling of 12662240 in words is "twelve million, six hundred sixty-two thousand, two hundred forty".