20769105 has 32 divisors (see below), whose sum is σ = 38191104. Its totient is φ = 9441216.

The previous prime is 20769037. The next prime is 20769113. The reversal of 20769105 is 50196702.

It is not a de Polignac number, because 20769105 - 2¹⁰ = 20768081 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 22972 + ... + 23858.

It is an arithmetic number, because the mean of its divisors is an integer number (1193472).

Almost surely, 2^20769105 is an apocalyptic number.

It is an amenable number.

20769105 is a deficient number, since it is larger than the sum of its proper divisors (17421999).

20769105 is a wasteful number, since it uses less digits than its factorization.

20769105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 20769105 is about 4557.3133532817. The cubic root of 20769105 is about 274.8775432746.

The spelling of 20769105 in words is "twenty million, seven hundred sixty-nine thousand, one hundred five".