20560078 has 48 divisors (see below), whose sum is σ = 39644640. Its totient is φ = 7824960.

The previous prime is 20560069. The next prime is 20560079. The reversal of 20560078 is 87006502.

20560078 is a nontrivial binomial coefficient, being equal to C(6413, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560079) 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, 89668 + ... + 89896.

It is an arithmetic number, because the mean of its divisors is an integer number (825930).

Almost surely, 2^20560078 is an apocalyptic number.

20560078 is the 6412-nd triangular number.

20560078 is the 2138-th centered nonagonal number.

20560078 is a deficient number, since it is larger than the sum of its proper divisors (19084562).

20560078 is a wasteful number, since it uses less digits than its factorization.

20560078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20560078 is about 4534.3222205750. The cubic root of 20560078 is about 273.9522800374.

The spelling of 20560078 in words is "twenty million, five hundred sixty thousand, seventy-eight".