11981058 has 16 divisors (see below), whose sum is σ = 25223520. Its totient is φ = 3783456.

The previous prime is 11981041. The next prime is 11981059. The reversal of 11981058 is 85018911.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11981059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52435 + ... + 52662.

It is an arithmetic number, because the mean of its divisors is an integer number (1576470).

Almost surely, 2^11981058 is an apocalyptic number.

11981058 is an abundant number, since it is smaller than the sum of its proper divisors (13242462).

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

11981058 is a wasteful number, since it uses less digits than its factorization.

11981058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105121.

The product of its (nonzero) digits is 2880, while the sum is 33.

The square root of 11981058 is about 3461.3664931642. The cubic root of 11981058 is about 228.8223229764.

Adding to 11981058 its reverse (85018911), we get a palindrome (96999969).

The spelling of 11981058 in words is "eleven million, nine hundred eighty-one thousand, fifty-eight".