11533638 has 8 divisors (see below), whose sum is σ = 23067288. Its totient is φ = 3844544.

The previous prime is 11533583. The next prime is 11533657. The reversal of 11533638 is 83633511.

It is a sphenic number, since it is the product of 3 distinct primes.

11533638 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 961131 + ... + 961142.

It is an arithmetic number, because the mean of its divisors is an integer number (2883411).

Almost surely, 2^11533638 is an apocalyptic number.

11533638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11533638 is a wasteful number, since it uses less digits than its factorization.

11533638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922278.

The product of its digits is 6480, while the sum is 30.

The square root of 11533638 is about 3396.1210225786. The cubic root of 11533638 is about 225.9377357385.

The spelling of 11533638 in words is "eleven million, five hundred thirty-three thousand, six hundred thirty-eight".