20126775 has 24 divisors (see below), whose sum is σ = 33618384. Its totient is φ = 10624000.

The previous prime is 20126761. The next prime is 20126801. The reversal of 20126775 is 57762102.

It is not a de Polignac number, because 20126775 - 2¹⁰ = 20125751 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6247 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (1400766).

Almost surely, 2^20126775 is an apocalyptic number.

20126775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20126775 is a deficient number, since it is larger than the sum of its proper divisors (13491609).

20126775 is a wasteful number, since it uses less digits than its factorization.

20126775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 20126775 is about 4486.2874406351. The cubic root of 20126775 is about 272.0140879021.

Adding to 20126775 its reverse (57762102), we get a palindrome (77888877).

The spelling of 20126775 in words is "twenty million, one hundred twenty-six thousand, seven hundred seventy-five".