11727990 has 40 divisors (see below), whose sum is σ = 31537440. Its totient is φ = 3127248.

The previous prime is 11727971. The next prime is 11728007. The reversal of 11727990 is 9972711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6430 + ... + 8049.

It is an arithmetic number, because the mean of its divisors is an integer number (788436).

Almost surely, 2^11727990 is an apocalyptic number.

11727990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11727990 is an abundant number, since it is smaller than the sum of its proper divisors (19809450).

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

11727990 is a wasteful number, since it uses less digits than its factorization.

11727990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14498 (or 14489 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 11727990 is about 3424.6153068629. The cubic root of 11727990 is about 227.1997568891.

The spelling of 11727990 in words is "eleven million, seven hundred twenty-seven thousand, nine hundred ninety".