20126884 has 6 divisors (see below), whose sum is σ = 35222054. Its totient is φ = 10063440.

The previous prime is 20126879. The next prime is 20126891. The reversal of 20126884 is 48862102.

It can be written as a sum of positive squares in only one way, i.e., 18249984 + 1876900 = 4272^2 + 1370^2 .

It is an unprimeable number.

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, 2515857 + ... + 2515864.

Almost surely, 2^20126884 is an apocalyptic number.

It is an amenable number.

20126884 is a deficient number, since it is larger than the sum of its proper divisors (15095170).

20126884 is a wasteful number, since it uses less digits than its factorization.

20126884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031725 (or 5031723 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 20126884 is about 4486.2995887479. The cubic root of 20126884 is about 272.0145789475.

Adding to 20126884 its reverse (48862102), we get a palindrome (68988986).

The spelling of 20126884 in words is "twenty million, one hundred twenty-six thousand, eight hundred eighty-four".