20004858 has 24 divisors (see below), whose sum is σ = 44743296. Its totient is φ = 6453000.

The previous prime is 20004851. The next prime is 20004883. The reversal of 20004858 is 85840002.

It is not an unprimeable number, because it can be changed into a prime (20004851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17368 + ... + 18483.

It is an arithmetic number, because the mean of its divisors is an integer number (1864304).

Almost surely, 2^20004858 is an apocalyptic number.

20004858 is an abundant number, since it is smaller than the sum of its proper divisors (24738438).

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

20004858 is a wasteful number, since it uses less digits than its factorization.

20004858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35890 (or 35887 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 20004858 is about 4472.6790629331. The cubic root of 20004858 is about 271.4637376149.

The spelling of 20004858 in words is "twenty million, four thousand, eight hundred fifty-eight".