20944077 has 32 divisors (see below), whose sum is σ = 35334144. Its totient is φ = 10718400.

The previous prime is 20944069. The next prime is 20944087. The reversal of 20944077 is 77044902.

It is not a de Polignac number, because 20944077 - 2³ = 20944069 is a prime.

It is a super-2 number, since 2×20944077² = 877308722763858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20944057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15763 + ... + 17039.

It is an arithmetic number, because the mean of its divisors is an integer number (1104192).

Almost surely, 2^20944077 is an apocalyptic number.

It is an amenable number.

20944077 is a deficient number, since it is larger than the sum of its proper divisors (14390067).

20944077 is a wasteful number, since it uses less digits than its factorization.

20944077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 20944077 is about 4576.4699277937. The cubic root of 20944077 is about 275.6472994232.

Adding to 20944077 its reverse (77044902), we get a palindrome (97988979).

The spelling of 20944077 in words is "twenty million, nine hundred forty-four thousand, seventy-seven".