20058857 has 16 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 15567552.

The previous prime is 20058853. The next prime is 20058869. The reversal of 20058857 is 75885002.

It is not a de Polignac number, because 20058857 - 2² = 20058853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20058853) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2744 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^20058857 is an apocalyptic number.

It is an amenable number.

20058857 is a deficient number, since it is larger than the sum of its proper divisors (5100823).

20058857 is a wasteful number, since it uses less digits than its factorization.

20058857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 20058857 is about 4478.7115334658. The cubic root of 20058857 is about 271.7077716835.

The spelling of 20058857 in words is "twenty million, fifty-eight thousand, eight hundred fifty-seven".