20270118 has 32 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 6107360.

The previous prime is 20270083. The next prime is 20270119. The reversal of 20270118 is 81107202.

It is a junction number, because it is equal to n+sod(n) for n = 20270094 and 20270103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12223 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960).

Almost surely, 2^20270118 is an apocalyptic number.

20270118 is an abundant number, since it is smaller than the sum of its proper divisors (24208602).

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

20270118 is a wasteful number, since it uses less digits than its factorization.

20270118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 20270118 is about 4502.2347784184. The cubic root of 20270118 is about 272.6583228324.

The spelling of 20270118 in words is "twenty million, two hundred seventy thousand, one hundred eighteen".