20285798 has 8 divisors (see below), whose sum is σ = 32769408. Its totient is φ = 9362664.

The previous prime is 20285789. The next prime is 20285801. The reversal of 20285798 is 89758202.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390086 + ... + 390137.

It is an arithmetic number, because the mean of its divisors is an integer number (4096176).

Almost surely, 2^20285798 is an apocalyptic number.

20285798 is a deficient number, since it is larger than the sum of its proper divisors (12483610).

20285798 is a wasteful number, since it uses less digits than its factorization.

20285798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780238.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 20285798 is about 4503.9757992245. The cubic root of 20285798 is about 272.7286098857.

The spelling of 20285798 in words is "twenty million, two hundred eighty-five thousand, seven hundred ninety-eight".