11931768 has 24 divisors (see below), whose sum is σ = 32315400. Its totient is φ = 3977232.

The previous prime is 11931767. The next prime is 11931809. The reversal of 11931768 is 86713911.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11931767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82788 + ... + 82931.

It is an arithmetic number, because the mean of its divisors is an integer number (1346475).

Almost surely, 2^11931768 is an apocalyptic number.

11931768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11931768 is an abundant number, since it is smaller than the sum of its proper divisors (20383632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11931768 is a wasteful number, since it uses less digits than its factorization.

11931768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165731 (or 165724 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 11931768 is about 3454.2391347444. The cubic root of 11931768 is about 228.5081004619.

The spelling of 11931768 in words is "eleven million, nine hundred thirty-one thousand, seven hundred sixty-eight".