20934558 has 16 divisors (see below), whose sum is σ = 46521360. Its totient is φ = 6978168.

The previous prime is 20934541. The next prime is 20934569. The reversal of 20934558 is 85543902.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193785 + ... + 193892.

It is an arithmetic number, because the mean of its divisors is an integer number (2907585).

Almost surely, 2^20934558 is an apocalyptic number.

20934558 is an abundant number, since it is smaller than the sum of its proper divisors (25586802).

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

20934558 is a wasteful number, since it uses less digits than its factorization.

20934558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387688 (or 387682 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 20934558 is about 4575.4298158752. The cubic root of 20934558 is about 275.6055328932.

The spelling of 20934558 in words is "twenty million, nine hundred thirty-four thousand, five hundred fifty-eight".