20500486 has 8 divisors (see below), whose sum is σ = 31742784. Its totient is φ = 9919560.

The previous prime is 20500483. The next prime is 20500511. The reversal of 20500486 is 68400502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20500486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165265 + ... + 165388.

It is an arithmetic number, because the mean of its divisors is an integer number (3967848).

Almost surely, 2^20500486 is an apocalyptic number.

20500486 is a deficient number, since it is larger than the sum of its proper divisors (11242298).

20500486 is a wasteful number, since it uses less digits than its factorization.

20500486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330686.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 20500486 is about 4527.7462384723. The cubic root of 20500486 is about 273.6873465033.

Adding to 20500486 its product of nonzero digits (1920), we get a triangular number (20502406 = T₆₄₀₃).

Adding to 20500486 its reverse (68400502), we get a palindrome (88900988).

The spelling of 20500486 in words is "twenty million, five hundred thousand, four hundred eighty-six".