11978258 has 8 divisors (see below), whose sum is σ = 18031728. Its totient is φ = 5967684.

The previous prime is 11978237. The next prime is 11978287. The reversal of 11978258 is 85287911.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10016 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (2253966).

Almost surely, 2^11978258 is an apocalyptic number.

11978258 is a deficient number, since it is larger than the sum of its proper divisors (6053470).

11978258 is a wasteful number, since it uses less digits than its factorization.

11978258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21448.

The product of its digits is 40320, while the sum is 41.

The square root of 11978258 is about 3460.9620049923. The cubic root of 11978258 is about 228.8044961584.

The spelling of 11978258 in words is "eleven million, nine hundred seventy-eight thousand, two hundred fifty-eight".