20560238 has 4 divisors (see below), whose sum is σ = 30840360. Its totient is φ = 10280118.

The previous prime is 20560213. The next prime is 20560247. The reversal of 20560238 is 83206502.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5140058 + ... + 5140061.

It is an arithmetic number, because the mean of its divisors is an integer number (7710090).

Almost surely, 2^20560238 is an apocalyptic number.

20560238 is a deficient number, since it is larger than the sum of its proper divisors (10280122).

20560238 is a wasteful number, since it uses less digits than its factorization.

20560238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280121.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20560238 is about 4534.3398637508. The cubic root of 20560238 is about 273.9529906743.

The spelling of 20560238 in words is "twenty million, five hundred sixty thousand, two hundred thirty-eight".