20812058 has 4 divisors (see below), whose sum is σ = 31218090. Its totient is φ = 10406028.

The previous prime is 20812039. The next prime is 20812091. The reversal of 20812058 is 85021802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20367169 + 444889 = 4513^2 + 667^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5203013 + ... + 5203016.

Almost surely, 2^20812058 is an apocalyptic number.

20812058 is a deficient number, since it is larger than the sum of its proper divisors (10406032).

20812058 is a wasteful number, since it uses less digits than its factorization.

20812058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10406031.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 20812058 is about 4562.0234545649. The cubic root of 20812058 is about 275.0669060348.

The spelling of 20812058 in words is "twenty million, eight hundred twelve thousand, fifty-eight".