11820158 has 8 divisors (see below), whose sum is σ = 20263152. Its totient is φ = 5065776.

The previous prime is 11820121. The next prime is 11820161. The reversal of 11820158 is 85102811.

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

It is a super-2 number, since 2×11820158² = 279432270289928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422135 + ... + 422162.

It is an arithmetic number, because the mean of its divisors is an integer number (2532894).

Almost surely, 2^11820158 is an apocalyptic number.

11820158 is a deficient number, since it is larger than the sum of its proper divisors (8442994).

11820158 is an equidigital number, since it uses as much as digits as its factorization.

11820158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844306.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 11820158 is about 3438.0456657817. The cubic root of 11820158 is about 227.7933774937.

Adding to 11820158 its reverse (85102811), we get a palindrome (96922969).

The spelling of 11820158 in words is "eleven million, eight hundred twenty thousand, one hundred fifty-eight".