11928690 has 24 divisors (see below), whose sum is σ = 31014828. Its totient is φ = 3180960.

The previous prime is 11928649. The next prime is 11928691. The reversal of 11928690 is 9682911.

It can be written as a sum of positive squares in 2 ways, for example, as 11840481 + 88209 = 3441^2 + 297^2 .

It is a super-2 number, since 2×11928690² = 284587290232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11928691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66181 + ... + 66360.

Almost surely, 2^11928690 is an apocalyptic number.

11928690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11928690 is an abundant number, since it is smaller than the sum of its proper divisors (19086138).

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

11928690 is a wasteful number, since it uses less digits than its factorization.

11928690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132554 (or 132551 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 11928690 is about 3453.7935665005. The cubic root of 11928690 is about 228.4884496042.

The spelling of 11928690 in words is "eleven million, nine hundred twenty-eight thousand, six hundred ninety".