11631906 has 48 divisors (see below), whose sum is σ = 29615040. Its totient is φ = 3252960.

The previous prime is 11631899. The next prime is 11631911. The reversal of 11631906 is 60913611.

11631906 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11631906.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315 + ... + 4833.

It is an arithmetic number, because the mean of its divisors is an integer number (616980).

Almost surely, 2^11631906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11631906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14807520).

11631906 is an abundant number, since it is smaller than the sum of its proper divisors (17983134).

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

11631906 is a wasteful number, since it uses less digits than its factorization.

11631906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551 (or 4548 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 11631906 is about 3410.5580188585. The cubic root of 11631906 is about 226.5775942793.

The spelling of 11631906 in words is "eleven million, six hundred thirty-one thousand, nine hundred six".