11866738 has 16 divisors (see below), whose sum is σ = 19789056. Its totient is φ = 5299920.

The previous prime is 11866717. The next prime is 11866739. The reversal of 11866738 is 83766811.

It is a self number, because there is not a number n which added to its sum of digits gives 11866738.

It is not an unprimeable number, because it can be changed into a prime (11866739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6556 + ... + 8167.

It is an arithmetic number, because the mean of its divisors is an integer number (1236816).

Almost surely, 2^11866738 is an apocalyptic number.

11866738 is a deficient number, since it is larger than the sum of its proper divisors (7922318).

11866738 is a wasteful number, since it uses less digits than its factorization.

11866738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14769.

The product of its digits is 48384, while the sum is 40.

The square root of 11866738 is about 3444.8132024828. The cubic root of 11866738 is about 228.0922090355.

The spelling of 11866738 in words is "eleven million, eight hundred sixty-six thousand, seven hundred thirty-eight".