20976135 has 16 divisors (see below), whose sum is σ = 34719840. Its totient is φ = 10801280.

The previous prime is 20976127. The next prime is 20976139. The reversal of 20976135 is 53167902.

It is not a de Polignac number, because 20976135 - 2³ = 20976127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20976096 and 20976105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20976139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23676 + ... + 24545.

It is an arithmetic number, because the mean of its divisors is an integer number (2169990).

Almost surely, 2^20976135 is an apocalyptic number.

20976135 is a deficient number, since it is larger than the sum of its proper divisors (13743705).

20976135 is a wasteful number, since it uses less digits than its factorization.

20976135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48258.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 20976135 is about 4579.9710697776. The cubic root of 20976135 is about 275.7878673481.

The spelling of 20976135 in words is "twenty million, nine hundred seventy-six thousand, one hundred thirty-five".