20106755 has 16 divisors (see below), whose sum is σ = 25261824. Its totient is φ = 15344640.

The previous prime is 20106743. The next prime is 20106763. The reversal of 20106755 is 55760102.

It is not a de Polignac number, because 20106755 - 2¹⁰ = 20105731 is a prime.

It is a Duffinian number.

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 in 15 ways as a sum of consecutive naturals, for example, 10427 + ... + 12203.

It is an arithmetic number, because the mean of its divisors is an integer number (1578864).

Almost surely, 2^20106755 is an apocalyptic number.

20106755 is a deficient number, since it is larger than the sum of its proper divisors (5155069).

20106755 is a wasteful number, since it uses less digits than its factorization.

20106755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 20106755 is about 4484.0556419384. The cubic root of 20106755 is about 271.9238676416.

Adding to 20106755 its reverse (55760102), we get a palindrome (75866857).

The spelling of 20106755 in words is "twenty million, one hundred six thousand, seven hundred fifty-five".