11978073 has 12 divisors (see below), whose sum is σ = 17898660. Its totient is φ = 7709856.

The previous prime is 11978069. The next prime is 11978077. The reversal of 11978073 is 37087911.

It is an interprime number because it is at equal distance from previous prime (11978069) and next prime (11978077).

It can be written as a sum of positive squares in 2 ways, for example, as 4210704 + 7767369 = 2052^2 + 2787^2 .

It is not a de Polignac number, because 11978073 - 2² = 11978069 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11978077) 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, 22686 + ... + 23207.

It is an arithmetic number, because the mean of its divisors is an integer number (1491555).

Almost surely, 2^11978073 is an apocalyptic number.

It is an amenable number.

11978073 is a deficient number, since it is larger than the sum of its proper divisors (5920587).

11978073 is a wasteful number, since it uses less digits than its factorization.

11978073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45928 (or 45925 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 11978073 is about 3460.9352782160. The cubic root of 11978073 is about 228.8033182172.

The spelling of 11978073 in words is "eleven million, nine hundred seventy-eight thousand, seventy-three".