11957768 has 16 divisors (see below), whose sum is σ = 22477500. Its totient is φ = 5963776.

The previous prime is 11957761. The next prime is 11957779. The reversal of 11957768 is 86775911.

It can be written as a sum of positive squares in 2 ways, for example, as 11957764 + 4 = 3458^2 + 2^2 .

Its product of digits (105840) is a multiple of the sum of its prime divisors (3780).

It is not an unprimeable number, because it can be changed into a prime (11957761) 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 3 ways as a sum of consecutive naturals, for example, 1928 + ... + 5256.

Almost surely, 2^11957768 is an apocalyptic number.

It is an amenable number.

11957768 is a deficient number, since it is larger than the sum of its proper divisors (10519732).

11957768 is a wasteful number, since it uses less digits than its factorization.

11957768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784 (or 3780 counting only the distinct ones).

The product of its digits is 105840, while the sum is 44.

The square root of 11957768 is about 3458.0005783690. Note that the first 3 decimals coincide. The cubic root of 11957768 is about 228.6739574250.

The spelling of 11957768 in words is "eleven million, nine hundred fifty-seven thousand, seven hundred sixty-eight".