20106004 has 6 divisors (see below), whose sum is σ = 35185514. Its totient is φ = 10053000.

The previous prime is 20106001. The next prime is 20106007. The reversal of 20106004 is 40060102.

It is an interprime number because it is at equal distance from previous prime (20106001) and next prime (20106007).

It can be written as a sum of positive squares in only one way, i.e., 16793604 + 3312400 = 4098^2 + 1820^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106001) 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 as a sum of consecutive naturals, namely, 2513247 + ... + 2513254.

Almost surely, 2^20106004 is an apocalyptic number.

It is an amenable number.

20106004 is a deficient number, since it is larger than the sum of its proper divisors (15079510).

20106004 is a wasteful number, since it uses less digits than its factorization.

20106004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026505 (or 5026503 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20106004 is about 4483.9719000012. The cubic root of 20106004 is about 271.9204820901.

Adding to 20106004 its reverse (40060102), we get a palindrome (60166106).

The spelling of 20106004 in words is "twenty million, one hundred six thousand, four".