11642638 has 8 divisors (see below), whose sum is σ = 19958832. Its totient is φ = 4989696.

The previous prime is 11642633. The next prime is 11642641. The reversal of 11642638 is 83624611.

It is a happy number.

11642638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11642633) 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, 415795 + ... + 415822.

It is an arithmetic number, because the mean of its divisors is an integer number (2494854).

Almost surely, 2^11642638 is an apocalyptic number.

11642638 is a deficient number, since it is larger than the sum of its proper divisors (8316194).

11642638 is an equidigital number, since it uses as much as digits as its factorization.

11642638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831626.

The product of its digits is 6912, while the sum is 31.

The square root of 11642638 is about 3412.1310056913. The cubic root of 11642638 is about 226.6472556426.

The spelling of 11642638 in words is "eleven million, six hundred forty-two thousand, six hundred thirty-eight".