20560436 has 24 divisors (see below), whose sum is σ = 40435584. Its totient is φ = 9076320.

The previous prime is 20560427. The next prime is 20560487. The reversal of 20560436 is 63406502.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7400 + ... + 9791.

It is an arithmetic number, because the mean of its divisors is an integer number (1684816).

Almost surely, 2^20560436 is an apocalyptic number.

20560436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20560436 is a deficient number, since it is larger than the sum of its proper divisors (19875148).

20560436 is a wasteful number, since it uses less digits than its factorization.

20560436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17231 (or 17229 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20560436 is about 4534.3616970859. The cubic root of 20560436 is about 273.9538700823.

Adding to 20560436 its reverse (63406502), we get a palindrome (83966938).

The spelling of 20560436 in words is "twenty million, five hundred sixty thousand, four hundred thirty-six".