20777368 has 16 divisors (see below), whose sum is σ = 39044880. Its totient is φ = 10365408.

The previous prime is 20777363. The next prime is 20777371. The reversal of 20777368 is 86377702.

It is a self number, because there is not a number n which added to its sum of digits gives 20777368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20777363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230 + ... + 6562.

It is an arithmetic number, because the mean of its divisors is an integer number (2440305).

Almost surely, 2^20777368 is an apocalyptic number.

It is an amenable number.

20777368 is a deficient number, since it is larger than the sum of its proper divisors (18267512).

20777368 is a wasteful number, since it uses less digits than its factorization.

20777368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826 (or 5822 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 20777368 is about 4558.2198279592. The cubic root of 20777368 is about 274.9139918359.

The spelling of 20777368 in words is "twenty million, seven hundred seventy-seven thousand, three hundred sixty-eight".