11981204 has 6 divisors (see below), whose sum is σ = 20967114. Its totient is φ = 5990600.

The previous prime is 11981201. The next prime is 11981231. The reversal of 11981204 is 40218911.

11981204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 9604 = 3460^2 + 98^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11981201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1497647 + ... + 1497654.

It is an arithmetic number, because the mean of its divisors is an integer number (3494519).

Almost surely, 2^11981204 is an apocalyptic number.

It is an amenable number.

11981204 is a deficient number, since it is larger than the sum of its proper divisors (8985910).

11981204 is a wasteful number, since it uses less digits than its factorization.

11981204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995305 (or 2995303 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 11981204 is about 3461.3875830366. The cubic root of 11981204 is about 228.8232524415.

The spelling of 11981204 in words is "eleven million, nine hundred eighty-one thousand, two hundred four".