20000858 has 8 divisors (see below), whose sum is σ = 30192852. Its totient is φ = 9936576.

The previous prime is 20000843. The next prime is 20000861. The reversal of 20000858 is 85800002.

It can be written as a sum of positive squares in 2 ways, for example, as 17032129 + 2968729 = 4127^2 + 1723^2 .

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

20000858 is a modest number, since divided by 858 gives 20 as remainder.

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, 31535 + ... + 32162.

Almost surely, 2^20000858 is an apocalyptic number.

20000858 is a deficient number, since it is larger than the sum of its proper divisors (10191994).

20000858 is a wasteful number, since it uses less digits than its factorization.

20000858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63856.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 20000858 is about 4472.2318812870. The cubic root of 20000858 is about 271.4456432212.

The spelling of 20000858 in words is "twenty million, eight hundred fifty-eight", and thus it is an aban number.