12004861 has 8 divisors (see below), whose sum is σ = 13311648. Its totient is φ = 10734000.

The previous prime is 12004847. The next prime is 12004879. The reversal of 12004861 is 16840021.

It is the 1415-th star number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12004861 - 2⁵ = 12004829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12004801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8275 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (1663956).

Almost surely, 2^12004861 is an apocalyptic number.

12004861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12004861 is a deficient number, since it is larger than the sum of its proper divisors (1306787).

12004861 is a wasteful number, since it uses less digits than its factorization.

12004861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17963.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12004861 is about 3464.8031690126. The cubic root of 12004861 is about 228.9737579815.

Adding to 12004861 its reverse (16840021), we get a palindrome (28844882).

The spelling of 12004861 in words is "twelve million, four thousand, eight hundred sixty-one".