20003077 has 6 divisors (see below), whose sum is σ = 20911142. Its totient is φ = 19132872.

The previous prime is 20003063. The next prime is 20003089. The reversal of 20003077 is 77030002.

It can be written as a sum of positive squares in only one way, i.e., 10074276 + 9928801 = 3174^2 + 3151^2 .

It is not a de Polignac number, because 20003077 - 2¹¹ = 20001029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18378 + ... + 19435.

Almost surely, 2^20003077 is an apocalyptic number.

It is an amenable number.

20003077 is a deficient number, since it is larger than the sum of its proper divisors (908065).

20003077 is an equidigital number, since it uses as much as digits as its factorization.

20003077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37859 (or 37836 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 19.

The square root of 20003077 is about 4472.4799608271. The cubic root of 20003077 is about 271.4556813840.

Adding to 20003077 its reverse (77030002), we get a palindrome (97033079).

The spelling of 20003077 in words is "twenty million, three thousand, seventy-seven".