11666928 has 80 divisors (see below), whose sum is σ = 37108736. Its totient is φ = 3075840.

The previous prime is 11666927. The next prime is 11666929. The reversal of 11666928 is 82966611.

It is an interprime number because it is at equal distance from previous prime (11666927) and next prime (11666929).

It is a super-2 number, since 2×11666928² = 272234417914368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3033 + ... + 5703.

Almost surely, 2^11666928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11666928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18554368).

11666928 is an abundant number, since it is smaller than the sum of its proper divisors (25441808).

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

11666928 is a wasteful number, since it uses less digits than its factorization.

11666928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2696 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 11666928 is about 3415.6885103885. The cubic root of 11666928 is about 226.8047639821.

The spelling of 11666928 in words is "eleven million, six hundred sixty-six thousand, nine hundred twenty-eight".