20112558 has 8 divisors (see below), whose sum is σ = 40225128. Its totient is φ = 6704184.

The previous prime is 20112541. The next prime is 20112601. The reversal of 20112558 is 85521102.

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

20112558 is an admirable number.

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, 1676041 + ... + 1676052.

It is an arithmetic number, because the mean of its divisors is an integer number (5028141).

Almost surely, 2^20112558 is an apocalyptic number.

20112558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20112558 is a wasteful number, since it uses less digits than its factorization.

20112558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352098.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 20112558 is about 4484.7026657294. The cubic root of 20112558 is about 271.9500250602.

The spelling of 20112558 in words is "twenty million, one hundred twelve thousand, five hundred fifty-eight".