12640148 has 6 divisors (see below), whose sum is σ = 22120266. Its totient is φ = 6320072.

The previous prime is 12640141. The next prime is 12640171. The reversal of 12640148 is 84104621.

12640148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12306064 + 334084 = 3508^2 + 578^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580015 + ... + 1580022.

It is an arithmetic number, because the mean of its divisors is an integer number (3686711).

Almost surely, 2^12640148 is an apocalyptic number.

It is an amenable number.

12640148 is a deficient number, since it is larger than the sum of its proper divisors (9480118).

12640148 is a wasteful number, since it uses less digits than its factorization.

12640148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160041 (or 3160039 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 12640148 is about 3555.2985809915. The cubic root of 12640148 is about 232.9435660632.

Adding to 12640148 its reverse (84104621), we get a palindrome (96744769).

The spelling of 12640148 in words is "twelve million, six hundred forty thousand, one hundred forty-eight".