20803077 has 24 divisors (see below), whose sum is σ = 31269888. Its totient is φ = 13312800.

The previous prime is 20803067. The next prime is 20803091. The reversal of 20803077 is 77030802.

It is not a de Polignac number, because 20803077 - 2⁴ = 20803061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20803077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48052 + ... + 48482.

It is an arithmetic number, because the mean of its divisors is an integer number (1302912).

Almost surely, 2^20803077 is an apocalyptic number.

It is an amenable number.

20803077 is a deficient number, since it is larger than the sum of its proper divisors (10466811).

20803077 is a wasteful number, since it uses less digits than its factorization.

20803077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20803077 is about 4561.0390263623. The cubic root of 20803077 is about 275.0273339221.

Adding to 20803077 its reverse (77030802), we get a palindrome (97833879).

The spelling of 20803077 in words is "twenty million, eight hundred three thousand, seventy-seven".