20560264 has 16 divisors (see below), whose sum is σ = 38912400. Its totient is φ = 10183632.

The previous prime is 20560247. The next prime is 20560273. The reversal of 20560264 is 46206502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11154 + ... + 12865.

It is an arithmetic number, because the mean of its divisors is an integer number (2432025).

Almost surely, 2^20560264 is an apocalyptic number.

It is an amenable number.

20560264 is a deficient number, since it is larger than the sum of its proper divisors (18352136).

20560264 is a wasteful number, since it uses less digits than its factorization.

20560264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24132 (or 24128 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20560264 is about 4534.3427307604. The cubic root of 20560264 is about 273.9531061524.

Adding to 20560264 its reverse (46206502), we get a palindrome (66766766).

The spelling of 20560264 in words is "twenty million, five hundred sixty thousand, two hundred sixty-four".