20011077 has 16 divisors (see below), whose sum is σ = 29740480. Its totient is φ = 13298256.

The previous prime is 20011067. The next prime is 20011087. The reversal of 20011077 is 77011002.

It is an interprime number because it is at equal distance from previous prime (20011067) and next prime (20011087).

It is not a de Polignac number, because 20011077 - 2¹¹ = 20009029 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 (20011007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9078 + ... + 11064.

It is an arithmetic number, because the mean of its divisors is an integer number (1858780).

Almost surely, 2^20011077 is an apocalyptic number.

20011077 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20011077 is a deficient number, since it is larger than the sum of its proper divisors (9729403).

20011077 is a wasteful number, since it uses less digits than its factorization.

20011077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 20011077 is about 4473.3742298180. The cubic root of 20011077 is about 271.4918650839.

Adding to 20011077 its reverse (77011002), we get a palindrome (97022079).

The spelling of 20011077 in words is "twenty million, eleven thousand, seventy-seven".