12901278 has 32 divisors (see below), whose sum is σ = 27963936. Its totient is φ = 3944448.

The previous prime is 12901277. The next prime is 12901279. The reversal of 12901278 is 87210921.

It is an interprime number because it is at equal distance from previous prime (12901277) and next prime (12901279).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12901277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14626 + ... + 15482.

It is an arithmetic number, because the mean of its divisors is an integer number (873873).

Almost surely, 2^12901278 is an apocalyptic number.

12901278 is an abundant number, since it is smaller than the sum of its proper divisors (15062658).

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

12901278 is a wasteful number, since it uses less digits than its factorization.

12901278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12901278 is about 3591.8349071192. The cubic root of 12901278 is about 234.5367545434.

The spelling of 12901278 in words is "twelve million, nine hundred one thousand, two hundred seventy-eight".