20379186 has 12 divisors (see below), whose sum is σ = 44154942. Its totient is φ = 6793056.

The previous prime is 20379181. The next prime is 20379187. The reversal of 20379186 is 68197302.

It can be written as a sum of positive squares in only one way, i.e., 10361961 + 10017225 = 3219^2 + 3165^2 .

It is a super-2 number, since 2×20379186² = 830622444045192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20379186.

It is not an unprimeable number, because it can be changed into a prime (20379181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 566071 + ... + 566106.

Almost surely, 2^20379186 is an apocalyptic number.

20379186 is an abundant number, since it is smaller than the sum of its proper divisors (23775756).

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

20379186 is a wasteful number, since it uses less digits than its factorization.

20379186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132185 (or 1132182 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 20379186 is about 4514.3311796987. The cubic root of 20379186 is about 273.1464817885.

The spelling of 20379186 in words is "twenty million, three hundred seventy-nine thousand, one hundred eighty-six".