20477073 has 16 divisors (see below), whose sum is σ = 28124096. Its totient is φ = 13245120.

The previous prime is 20477059. The next prime is 20477077. The reversal of 20477073 is 37077402.

It is a happy number.

It is not a de Polignac number, because 20477073 - 2⁴ = 20477057 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 20477073.

It is not an unprimeable number, because it can be changed into a prime (20477077) by changing a digit.

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, 22911 + ... + 23787.

It is an arithmetic number, because the mean of its divisors is an integer number (1757756).

Almost surely, 2^20477073 is an apocalyptic number.

It is an amenable number.

20477073 is a deficient number, since it is larger than the sum of its proper divisors (7647023).

20477073 is a wasteful number, since it uses less digits than its factorization.

20477073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 20477073 is about 4525.1599971714. The cubic root of 20477073 is about 273.5831167337.

It can be divided in two parts, 204 and 77073, that added together give a palindrome (77277).

The spelling of 20477073 in words is "twenty million, four hundred seventy-seven thousand, seventy-three".