20126004 has 12 divisors (see below), whose sum is σ = 46960704. Its totient is φ = 6708664.

The previous prime is 20126003. The next prime is 20126009. The reversal of 20126004 is 40062102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126003) 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 in 3 ways as a sum of consecutive naturals, for example, 838572 + ... + 838595.

It is an arithmetic number, because the mean of its divisors is an integer number (3913392).

Almost surely, 2^20126004 is an apocalyptic number.

It is an amenable number.

20126004 is an abundant number, since it is smaller than the sum of its proper divisors (26834700).

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

20126004 is a wasteful number, since it uses less digits than its factorization.

20126004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677174 (or 1677172 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20126004 is about 4486.2015113011. The cubic root of 20126004 is about 272.0106144935.

Adding to 20126004 its reverse (40062102), we get a palindrome (60188106).

The spelling of 20126004 in words is "twenty million, one hundred twenty-six thousand, four".