20773263 has 16 divisors (see below), whose sum is σ = 31907840. Its totient is φ = 11775456.

The previous prime is 20773261. The next prime is 20773271. The reversal of 20773263 is 36237702.

It is not a de Polignac number, because 20773263 - 2¹ = 20773261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20773263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20773261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1228 + ... + 6561.

It is an arithmetic number, because the mean of its divisors is an integer number (1994240).

Almost surely, 2^20773263 is an apocalyptic number.

20773263 is a deficient number, since it is larger than the sum of its proper divisors (11134577).

20773263 is a wasteful number, since it uses less digits than its factorization.

20773263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926.

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 20773263 is about 4557.7695202807. The cubic root of 20773263 is about 274.8958856564.

The spelling of 20773263 in words is "twenty million, seven hundred seventy-three thousand, two hundred sixty-three".