12886920 has 48 divisors (see below), whose sum is σ = 41883660. Its totient is φ = 3436416.

The previous prime is 12886919. The next prime is 12886927. The reversal of 12886920 is 2968821.

It can be written as a sum of positive squares in 2 ways, for example, as 11573604 + 1313316 = 3402^2 + 1146^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (12886927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17539 + ... + 18258.

Almost surely, 2^12886920 is an apocalyptic number.

12886920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12886920 is an abundant number, since it is smaller than the sum of its proper divisors (28996740).

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

12886920 is a wasteful number, since it uses less digits than its factorization.

12886920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35814 (or 35807 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12886920 is about 3589.8356508342. The cubic root of 12886920 is about 234.4497159123.

The spelling of 12886920 in words is "twelve million, eight hundred eighty-six thousand, nine hundred twenty".