20768948 has 12 divisors (see below), whose sum is σ = 36668100. Its totient is φ = 10292352.

The previous prime is 20768947. The next prime is 20768953. The reversal of 20768948 is 84986702.

It can be written as a sum of positive squares in 2 ways, for example, as 7606564 + 13162384 = 2758^2 + 3628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20768899 and 20768908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20768947) 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, 22523 + ... + 23426.

It is an arithmetic number, because the mean of its divisors is an integer number (3055675).

Almost surely, 2^20768948 is an apocalyptic number.

It is an amenable number.

20768948 is a deficient number, since it is larger than the sum of its proper divisors (15899152).

20768948 is a wasteful number, since it uses less digits than its factorization.

20768948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46066 (or 46064 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 20768948 is about 4557.2961281883. The cubic root of 20768948 is about 274.8768506451.

The spelling of 20768948 in words is "twenty million, seven hundred sixty-eight thousand, nine hundred forty-eight".