11948638 has 48 divisors (see below), whose sum is σ = 21345120. Its totient is φ = 4996992.

The previous prime is 11948617. The next prime is 11948639. The reversal of 11948638 is 83684911.

It is a self number, because there is not a number n which added to its sum of digits gives 11948638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11948639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225420 + ... + 225472.

It is an arithmetic number, because the mean of its divisors is an integer number (444690).

Almost surely, 2^11948638 is an apocalyptic number.

11948638 is a deficient number, since it is larger than the sum of its proper divisors (9396482).

11948638 is a wasteful number, since it uses less digits than its factorization.

11948638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 120 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 11948638 is about 3456.6801992663. The cubic root of 11948638 is about 228.6157435283.

The spelling of 11948638 in words is "eleven million, nine hundred forty-eight thousand, six hundred thirty-eight".