20285498 has 16 divisors (see below), whose sum is σ = 31095360. Its totient is φ = 9922176.

The previous prime is 20285497. The next prime is 20285519. The reversal of 20285498 is 89458202.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20285497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41411 + ... + 41897.

It is an arithmetic number, because the mean of its divisors is an integer number (1943460).

Almost surely, 2^20285498 is an apocalyptic number.

20285498 is a deficient number, since it is larger than the sum of its proper divisors (10809862).

20285498 is a wasteful number, since it uses less digits than its factorization.

20285498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 20285498 is about 4503.9424951924. The cubic root of 20285498 is about 272.7272654478.

The spelling of 20285498 in words is "twenty million, two hundred eighty-five thousand, four hundred ninety-eight".