20380176 has 30 divisors (see below), whose sum is σ = 57036590. Its totient is φ = 6793344.

The previous prime is 20380169. The next prime is 20380177. The reversal of 20380176 is 67108302.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 7420176 = 3600^2 + 2724^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20380177) 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, 70621 + ... + 70908.

Almost surely, 2^20380176 is an apocalyptic number.

It is an amenable number.

20380176 is an abundant number, since it is smaller than the sum of its proper divisors (36656414).

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

20380176 is a wasteful number, since it uses less digits than its factorization.

20380176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141543 (or 141534 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20380176 is about 4514.4408291615. The cubic root of 20380176 is about 273.1509047757.

Adding to 20380176 its reverse (67108302), we get a palindrome (87488478).

The spelling of 20380176 in words is "twenty million, three hundred eighty thousand, one hundred seventy-six".