12261798 has 24 divisors (see below), whose sum is σ = 26636688. Its totient is φ = 4076592.

The previous prime is 12261791. The next prime is 12261803. The reversal of 12261798 is 89716221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12261791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9415 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (1109862).

Almost surely, 2^12261798 is an apocalyptic number.

12261798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12261798 is an abundant number, since it is smaller than the sum of its proper divisors (14374890).

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

12261798 is a wasteful number, since it uses less digits than its factorization.

12261798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1785 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12261798 is about 3501.6850229568. The cubic root of 12261798 is about 230.5957962008.

The spelling of 12261798 in words is "twelve million, two hundred sixty-one thousand, seven hundred ninety-eight".