20476768 has 24 divisors (see below), whose sum is σ = 43415568. Its totient is φ = 9450624.

The previous prime is 20476763. The next prime is 20476777. The reversal of 20476768 is 86767402.

It is a self number, because there is not a number n which added to its sum of digits gives 20476768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20476763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24196 + ... + 25027.

It is an arithmetic number, because the mean of its divisors is an integer number (1808982).

Almost surely, 2^20476768 is an apocalyptic number.

It is an amenable number.

20476768 is an abundant number, since it is smaller than the sum of its proper divisors (22938800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20476768 is a wasteful number, since it uses less digits than its factorization.

20476768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49246 (or 49238 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 20476768 is about 4525.1262965800. The cubic root of 20476768 is about 273.5817584136.

The spelling of 20476768 in words is "twenty million, four hundred seventy-six thousand, seven hundred sixty-eight".