11982138 has 16 divisors (see below), whose sum is σ = 27387840. Its totient is φ = 3423456.

The previous prime is 11982109. The next prime is 11982163. The reversal of 11982138 is 83128911.

It is a junction number, because it is equal to n+sod(n) for n = 11982099 and 11982108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142603 + ... + 142686.

It is an arithmetic number, because the mean of its divisors is an integer number (1711740).

Almost surely, 2^11982138 is an apocalyptic number.

11982138 is an abundant number, since it is smaller than the sum of its proper divisors (15405702).

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

11982138 is a wasteful number, since it uses less digits than its factorization.

11982138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285301.

The product of its digits is 3456, while the sum is 33.

The square root of 11982138 is about 3461.5224973991. The cubic root of 11982138 is about 228.8291982925.

The spelling of 11982138 in words is "eleven million, nine hundred eighty-two thousand, one hundred thirty-eight".