20566360 has 32 divisors (see below), whose sum is σ = 48711600. Its totient is φ = 7793280.

The previous prime is 20566331. The next prime is 20566367. The reversal of 20566360 is 6366502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20566367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12771 + ... + 14290.

Almost surely, 2^20566360 is an apocalyptic number.

20566360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20566360 is an abundant number, since it is smaller than the sum of its proper divisors (28145240).

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

20566360 is a wasteful number, since it uses less digits than its factorization.

20566360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27091 (or 27087 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 20566360 is about 4535.0148842093. The cubic root of 20566360 is about 273.9801786503.

The spelling of 20566360 in words is "twenty million, five hundred sixty-six thousand, three hundred sixty".