12878481 has 32 divisors (see below), whose sum is σ = 21593088. Its totient is φ = 6632640.

The previous prime is 12878431. The next prime is 12878483. The reversal of 12878481 is 18487821.

It is a happy number.

It is not a de Polignac number, because 12878481 - 2¹³ = 12870289 is a prime.

It is a super-2 number, since 2×12878481² = 331710545734722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12878483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45366 + ... + 45648.

It is an arithmetic number, because the mean of its divisors is an integer number (674784).

Almost surely, 2^12878481 is an apocalyptic number.

12878481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12878481 is a deficient number, since it is larger than the sum of its proper divisors (8714607).

12878481 is a wasteful number, since it uses less digits than its factorization.

12878481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its digits is 28672, while the sum is 39.

The square root of 12878481 is about 3588.6600563442. The cubic root of 12878481 is about 234.3985282691.

The spelling of 12878481 in words is "twelve million, eight hundred seventy-eight thousand, four hundred eighty-one".