12900381 has 16 divisors (see below), whose sum is σ = 18803904. Its totient is φ = 7818624.

The previous prime is 12900367. The next prime is 12900397. The reversal of 12900381 is 18300921.

It is not a de Polignac number, because 12900381 - 2⁶ = 12900317 is a prime.

It is a super-2 number, since 2×12900381² = 332839659890322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12900311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (1175244).

Almost surely, 2^12900381 is an apocalyptic number.

It is an amenable number.

12900381 is a deficient number, since it is larger than the sum of its proper divisors (5903523).

12900381 is a wasteful number, since it uses less digits than its factorization.

12900381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12900381 is about 3591.7100384079. The cubic root of 12900381 is about 234.5313187940.

The spelling of 12900381 in words is "twelve million, nine hundred thousand, three hundred eighty-one".