11973105 has 24 divisors (see below), whose sum is σ = 20952360. Its totient is φ = 6324480.

The previous prime is 11973079. The next prime is 11973113. The reversal of 11973105 is 50137911.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 419904 + 11553201 = 648^2 + 3399^2 .

It is not a de Polignac number, because 11973105 - 2⁹ = 11972593 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3685 + ... + 6125.

It is an arithmetic number, because the mean of its divisors is an integer number (873015).

Almost surely, 2^11973105 is an apocalyptic number.

11973105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11973105 is a deficient number, since it is larger than the sum of its proper divisors (8979255).

11973105 is a wasteful number, since it uses less digits than its factorization.

11973105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2558 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 11973105 is about 3460.2174787143. The cubic root of 11973105 is about 228.7716811842.

The spelling of 11973105 in words is "eleven million, nine hundred seventy-three thousand, one hundred five".