12649268 has 6 divisors (see below), whose sum is σ = 22136226. Its totient is φ = 6324632.

The previous prime is 12649261. The next prime is 12649277. The reversal of 12649268 is 86294621.

It can be written as a sum of positive squares in only one way, i.e., 11478544 + 1170724 = 3388^2 + 1082^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1581155 + ... + 1581162.

It is an arithmetic number, because the mean of its divisors is an integer number (3689371).

Almost surely, 2^12649268 is an apocalyptic number.

It is an amenable number.

12649268 is a deficient number, since it is larger than the sum of its proper divisors (9486958).

12649268 is a wasteful number, since it uses less digits than its factorization.

12649268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162321 (or 3162319 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 12649268 is about 3556.5809424221. The cubic root of 12649268 is about 232.9995763407. Note that the first 3 decimals are identical.

It can be divided in two parts, 126 and 49268, that added together give a palindrome (49394).

The spelling of 12649268 in words is "twelve million, six hundred forty-nine thousand, two hundred sixty-eight".