12778254 has 24 divisors (see below), whose sum is σ = 29315520. Its totient is φ = 4008768.

The previous prime is 12778253. The next prime is 12778277. The reversal of 12778254 is 45287721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20574 + ... + 21185.

It is an arithmetic number, because the mean of its divisors is an integer number (1221480).

Almost surely, 2^12778254 is an apocalyptic number.

12778254 is an abundant number, since it is smaller than the sum of its proper divisors (16537266).

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

12778254 is a wasteful number, since it uses less digits than its factorization.

12778254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41784 (or 41781 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12778254 is about 3574.6683762274. The cubic root of 12778254 is about 233.7888737811.

The spelling of 12778254 in words is "twelve million, seven hundred seventy-eight thousand, two hundred fifty-four".