12755890 has 32 divisors (see below), whose sum is σ = 26438400. Its totient is φ = 4340544.

The previous prime is 12755851. The next prime is 12755903. The reversal of 12755890 is 9855721.

It is an unprimeable number.

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, 9819 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (826200).

Almost surely, 2^12755890 is an apocalyptic number.

12755890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12755890 is an abundant number, since it is smaller than the sum of its proper divisors (13682510).

12755890 is a wasteful number, since it uses less digits than its factorization.

12755890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 12755890 is about 3571.5388840106. The cubic root of 12755890 is about 233.6524047571.

It can be divided in two parts, 1275 and 5890, that multiplied together give a triangular number (7509750 = T₃₈₇₅).

The spelling of 12755890 in words is "twelve million, seven hundred fifty-five thousand, eight hundred ninety".