20530773 has 32 divisors (see below), whose sum is σ = 33075200. Its totient is φ = 12538800.

The previous prime is 20530771. The next prime is 20530793. The reversal of 20530773 is 37703502.

It is not a de Polignac number, because 20530773 - 2¹ = 20530771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20530771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15258 + ... + 16548.

It is an arithmetic number, because the mean of its divisors is an integer number (1033600).

Almost surely, 2^20530773 is an apocalyptic number.

It is an amenable number.

20530773 is a deficient number, since it is larger than the sum of its proper divisors (12544427).

20530773 is a wasteful number, since it uses less digits than its factorization.

20530773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 20530773 is about 4531.0896040577. The cubic root of 20530773 is about 273.8220602190.

The spelling of 20530773 in words is "twenty million, five hundred thirty thousand, seven hundred seventy-three".