20380126 has 16 divisors (see below), whose sum is σ = 33004944. Its totient is φ = 9382464.

The previous prime is 20380123. The next prime is 20380169. The reversal of 20380126 is 62108302.

It is a junction number, because it is equal to n+sod(n) for n = 20380097 and 20380106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13506 + ... + 14938.

It is an arithmetic number, because the mean of its divisors is an integer number (2062809).

Almost surely, 2^20380126 is an apocalyptic number.

20380126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20380126 is a deficient number, since it is larger than the sum of its proper divisors (12624818).

20380126 is a wasteful number, since it uses less digits than its factorization.

20380126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20380126 is about 4514.4352913737. The cubic root of 20380126 is about 273.1506813960.

Adding to 20380126 its reverse (62108302), we get a palindrome (82488428).

The spelling of 20380126 in words is "twenty million, three hundred eighty thousand, one hundred twenty-six".