20440773 has 12 divisors (see below), whose sum is σ = 29609580. Its totient is φ = 13588416.

The previous prime is 20440759. The next prime is 20440793. The reversal of 20440773 is 37704402.

It can be written as a sum of positive squares in 2 ways, for example, as 7717284 + 12723489 = 2778^2 + 3567^2 .

It is not a de Polignac number, because 20440773 - 2⁵ = 20440741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (2467465).

Almost surely, 2^20440773 is an apocalyptic number.

It is an amenable number.

20440773 is a deficient number, since it is larger than the sum of its proper divisors (9168807).

20440773 is a wasteful number, since it uses less digits than its factorization.

20440773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468 (or 6465 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20440773 is about 4521.1473101415. The cubic root of 20440773 is about 273.4213595458.

It can be divided in two parts, 204407 and 73, that added together give a triangular number (204480 = T₆₃₉).

The spelling of 20440773 in words is "twenty million, four hundred forty thousand, seven hundred seventy-three".