20876782 has 24 divisors (see below), whose sum is σ = 35034840. Its totient is φ = 9302400.

The previous prime is 20876771. The next prime is 20876783. The reversal of 20876782 is 28767802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20876783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10032 + ... + 11932.

It is an arithmetic number, because the mean of its divisors is an integer number (1459785).

Almost surely, 2^20876782 is an apocalyptic number.

20876782 is a deficient number, since it is larger than the sum of its proper divisors (14158058).

20876782 is a wasteful number, since it uses less digits than its factorization.

20876782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 20876782 is about 4569.1117298661. Note that the first 3 decimals coincide. The cubic root of 20876782 is about 275.3517570325.

It can be divided in two parts, 208767 and 82, that added together give a square (208849 = 457²).

The spelling of 20876782 in words is "twenty million, eight hundred seventy-six thousand, seven hundred eighty-two".