20768678 has 16 divisors (see below), whose sum is σ = 37152000. Its totient is φ = 8513736.

The previous prime is 20768617. The next prime is 20768711. The reversal of 20768678 is 87686702.

It is a happy number.

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, 31928 + ... + 32571.

It is an arithmetic number, because the mean of its divisors is an integer number (2322000).

Almost surely, 2^20768678 is an apocalyptic number.

20768678 is a deficient number, since it is larger than the sum of its proper divisors (16383322).

20768678 is a wasteful number, since it uses less digits than its factorization.

20768678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64531.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 20768678 is about 4557.2665052639. The cubic root of 20768678 is about 274.8756594907.

The spelling of 20768678 in words is "twenty million, seven hundred sixty-eight thousand, six hundred seventy-eight".