11638742 has 8 divisors (see below), whose sum is σ = 17496000. Its totient is φ = 5806744.

The previous prime is 11638741. The next prime is 11638769. The reversal of 11638742 is 24783611.

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

It is a junction number, because it is equal to n+sod(n) for n = 11638699 and 11638708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11638741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5117 + ... + 7032.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^11638742 is an apocalyptic number.

11638742 is a deficient number, since it is larger than the sum of its proper divisors (5857258).

11638742 is a wasteful number, since it uses less digits than its factorization.

11638742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12630.

The product of its digits is 8064, while the sum is 32.

The square root of 11638742 is about 3411.5600536998. The cubic root of 11638742 is about 226.6219716757.

The spelling of 11638742 in words is "eleven million, six hundred thirty-eight thousand, seven hundred forty-two".