20782827 has 24 divisors (see below), whose sum is σ = 34034000. Its totient is φ = 12115008.

The previous prime is 20782807. The next prime is 20782829. The reversal of 20782827 is 72828702.

It is not a de Polignac number, because 20782827 - 2⁸ = 20782571 is a prime.

It is a super-2 number, since 2×20782827² = 863851796223858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20782791 and 20782800.

It is not an unprimeable number, because it can be changed into a prime (20782829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2452 + ... + 6897.

Almost surely, 2^20782827 is an apocalyptic number.

20782827 is a deficient number, since it is larger than the sum of its proper divisors (13251173).

20782827 is a wasteful number, since it uses less digits than its factorization.

20782827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387 (or 9384 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 20782827 is about 4558.8185969613. The cubic root of 20782827 is about 274.9380664936.

It can be divided in two parts, 20782 and 827, that added together give a square (21609 = 147²).

The spelling of 20782827 in words is "twenty million, seven hundred eighty-two thousand, eight hundred twenty-seven".