20380118 has 16 divisors (see below), whose sum is σ = 34251984. Its totient is φ = 9012960.

The previous prime is 20380117. The next prime is 20380121. The reversal of 20380118 is 81108302.

It is a junction number, because it is equal to n+sod(n) for n = 20380093 and 20380102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11705 + ... + 13332.

It is an arithmetic number, because the mean of its divisors is an integer number (2140749).

Almost surely, 2^20380118 is an apocalyptic number.

20380118 is a deficient number, since it is larger than the sum of its proper divisors (13871866).

20380118 is a wasteful number, since it uses less digits than its factorization.

20380118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25087.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 20380118 is about 4514.4344053270. The cubic root of 20380118 is about 273.1506456552.

The spelling of 20380118 in words is "twenty million, three hundred eighty thousand, one hundred eighteen".