20560478 has 16 divisors (see below), whose sum is σ = 32212080. Its totient is φ = 9830016.

The previous prime is 20560427. The next prime is 20560487. The reversal of 20560478 is 87406502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4550 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (2013255).

Almost surely, 2^20560478 is an apocalyptic number.

20560478 is a deficient number, since it is larger than the sum of its proper divisors (11651602).

20560478 is a wasteful number, since it uses less digits than its factorization.

20560478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 20560478 is about 4534.3663283859. The cubic root of 20560478 is about 273.9540566227.

The spelling of 20560478 in words is "twenty million, five hundred sixty thousand, four hundred seventy-eight".