20677996 has 12 divisors (see below), whose sum is σ = 36218448. Its totient is φ = 10329872.

The previous prime is 20677991. The next prime is 20677997. The reversal of 20677996 is 69977602.

It is not an unprimeable number, because it can be changed into a prime (20677991) 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 3 ways as a sum of consecutive naturals, for example, 7110 + ... + 9586.

It is an arithmetic number, because the mean of its divisors is an integer number (3018204).

Almost surely, 2^20677996 is an apocalyptic number.

It is an amenable number.

20677996 is a deficient number, since it is larger than the sum of its proper divisors (15540452).

20677996 is a wasteful number, since it uses less digits than its factorization.

20677996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568 (or 4566 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 20677996 is about 4547.3064554745. The cubic root of 20677996 is about 274.4750138449.

The spelling of 20677996 in words is "twenty million, six hundred seventy-seven thousand, nine hundred ninety-six".