20111058 has 32 divisors (see below), whose sum is σ = 48755520. Its totient is φ = 6094080.

The previous prime is 20111053. The next prime is 20111071. The reversal of 20111058 is 85011102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 20111058.

It is not an unprimeable number, because it can be changed into a prime (20111053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16335 + ... + 17522.

It is an arithmetic number, because the mean of its divisors is an integer number (1523610).

Almost surely, 2^20111058 is an apocalyptic number.

20111058 is an abundant number, since it is smaller than the sum of its proper divisors (28644462).

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

20111058 is a wasteful number, since it uses less digits than its factorization.

20111058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33879 (or 33873 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 20111058 is about 4484.5354274440. The cubic root of 20111058 is about 271.9432641901.

The spelling of 20111058 in words is "twenty million, one hundred eleven thousand, fifty-eight".