12627640 has 16 divisors (see below), whose sum is σ = 28412280. Its totient is φ = 5051040.

The previous prime is 12627607. The next prime is 12627649. The reversal of 12627640 is 4672621.

It is a junction number, because it is equal to n+sod(n) for n = 12627599 and 12627608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12627649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157806 + ... + 157885.

Almost surely, 2^12627640 is an apocalyptic number.

12627640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12627640 is an abundant number, since it is smaller than the sum of its proper divisors (15784640).

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

12627640 is a wasteful number, since it uses less digits than its factorization.

12627640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315702 (or 315698 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 12627640 is about 3553.5390809727. The cubic root of 12627640 is about 232.8667046288.

It can be divided in two parts, 1 and 2627640, that added together give a square (2627641 = 1621²).

The spelling of 12627640 in words is "twelve million, six hundred twenty-seven thousand, six hundred forty".