11388906 has 12 divisors (see below), whose sum is σ = 24676002. Its totient is φ = 3796296.

The previous prime is 11388901. The next prime is 11388907. The reversal of 11388906 is 60988311.

It can be written as a sum of positive squares in only one way, i.e., 10595025 + 793881 = 3255^2 + 891^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11388901) 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, 316341 + ... + 316376.

Almost surely, 2^11388906 is an apocalyptic number.

11388906 is an abundant number, since it is smaller than the sum of its proper divisors (13287096).

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

11388906 is a wasteful number, since it uses less digits than its factorization.

11388906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632725 (or 632722 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 11388906 is about 3374.7453237244. The cubic root of 11388906 is about 224.9886809121.

The spelling of 11388906 in words is "eleven million, three hundred eighty-eight thousand, nine hundred six".