20126812 has 36 divisors (see below), whose sum is σ = 37850176. Its totient is φ = 9354240.

The previous prime is 20126809. The next prime is 20126831. The reversal of 20126812 is 21862102.

It is a super-2 number, since 2×20126812² = 810177122566688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104188 + ... + 104380.

Almost surely, 2^20126812 is an apocalyptic number.

It is an amenable number.

20126812 is a deficient number, since it is larger than the sum of its proper divisors (17723364).

20126812 is a wasteful number, since it uses less digits than its factorization.

20126812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 20126812 is about 4486.2915643101. The cubic root of 20126812 is about 272.0142545874.

Adding to 20126812 its reverse (21862102), we get a palindrome (41988914).

The spelling of 20126812 in words is "twenty million, one hundred twenty-six thousand, eight hundred twelve".