20773766 has 16 divisors (see below), whose sum is σ = 33633600. Its totient is φ = 9566208.

The previous prime is 20773747. The next prime is 20773789. The reversal of 20773766 is 66737702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19475 + ... + 20513.

It is an arithmetic number, because the mean of its divisors is an integer number (2102100).

Almost surely, 2^20773766 is an apocalyptic number.

20773766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20773766 is a deficient number, since it is larger than the sum of its proper divisors (12859834).

20773766 is a wasteful number, since it uses less digits than its factorization.

20773766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its (nonzero) digits is 74088, while the sum is 38.

The square root of 20773766 is about 4557.8247004465. The cubic root of 20773766 is about 274.8981043981.

The spelling of 20773766 in words is "twenty million, seven hundred seventy-three thousand, seven hundred sixty-six".