11921158 has 8 divisors (see below), whose sum is σ = 17898552. Its totient is φ = 5954976.

The previous prime is 11921137. The next prime is 11921177. The reversal of 11921158 is 85112911.

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

It is a super-2 number, since 2×11921158² = 284228016121928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 766 + ... + 4942.

It is an arithmetic number, because the mean of its divisors is an integer number (2237319).

Almost surely, 2^11921158 is an apocalyptic number.

11921158 is a deficient number, since it is larger than the sum of its proper divisors (5977394).

11921158 is a wasteful number, since it uses less digits than its factorization.

11921158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606.

The product of its digits is 720, while the sum is 28.

The square root of 11921158 is about 3452.7029991008. The cubic root of 11921158 is about 228.4403488391.

The spelling of 11921158 in words is "eleven million, nine hundred twenty-one thousand, one hundred fifty-eight".