20776630 has 32 divisors (see below), whose sum is σ = 42928704. Its totient is φ = 7092096.

The previous prime is 20776621. The next prime is 20776631. The reversal of 20776630 is 3667702.

It is a junction number, because it is equal to n+sod(n) for n = 20776592 and 20776601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20776631) 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 15 ways as a sum of consecutive naturals, for example, 20004 + ... + 21016.

It is an arithmetic number, because the mean of its divisors is an integer number (1341522).

Almost surely, 2^20776630 is an apocalyptic number.

20776630 is an abundant number, since it is smaller than the sum of its proper divisors (22152074).

20776630 is a wasteful number, since it uses less digits than its factorization.

20776630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 20776630 is about 4558.1388745847. The cubic root of 20776630 is about 274.9107368691.

The spelling of 20776630 in words is "twenty million, seven hundred seventy-six thousand, six hundred thirty".