12761890 has 16 divisors (see below), whose sum is σ = 23188032. Its totient is φ = 5056624.

The previous prime is 12761887. The next prime is 12761891. The reversal of 12761890 is 9816721.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12761891) 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 7 ways as a sum of consecutive naturals, for example, 4894 + ... + 7033.

It is an arithmetic number, because the mean of its divisors is an integer number (1449252).

Almost surely, 2^12761890 is an apocalyptic number.

12761890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12761890 is a deficient number, since it is larger than the sum of its proper divisors (10426142).

12761890 is a wasteful number, since it uses less digits than its factorization.

12761890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12041.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 12761890 is about 3572.3787593143. The cubic root of 12761890 is about 233.6890334486.

The spelling of 12761890 in words is "twelve million, seven hundred sixty-one thousand, eight hundred ninety".