20512126 has 8 divisors (see below), whose sum is σ = 30857400. Its totient is φ = 10226328.

The previous prime is 20512087. The next prime is 20512139. The reversal of 20512126 is 62121502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13996 + ... + 15391.

It is an arithmetic number, because the mean of its divisors is an integer number (3857175).

Almost surely, 2^20512126 is an apocalyptic number.

20512126 is a deficient number, since it is larger than the sum of its proper divisors (10345274).

20512126 is a wasteful number, since it uses less digits than its factorization.

20512126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29738.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 20512126 is about 4529.0314637900. The cubic root of 20512126 is about 273.7391358115.

Adding to 20512126 its reverse (62121502), we get a palindrome (82633628).

The spelling of 20512126 in words is "twenty million, five hundred twelve thousand, one hundred twenty-six".