20285298 has 24 divisors (see below), whose sum is σ = 47947536. Its totient is φ = 6147000.

The previous prime is 20285281. The next prime is 20285299. The reversal of 20285298 is 89258202.

It is a super-2 number, since 2×20285298² = 822986629897608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20285299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51028 + ... + 51423.

It is an arithmetic number, because the mean of its divisors is an integer number (1997814).

Almost surely, 2^20285298 is an apocalyptic number.

20285298 is an abundant number, since it is smaller than the sum of its proper divisors (27662238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20285298 is a wasteful number, since it uses less digits than its factorization.

20285298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102470 (or 102467 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 20285298 is about 4503.9202923675. The cubic root of 20285298 is about 272.7263691485.

The spelling of 20285298 in words is "twenty million, two hundred eighty-five thousand, two hundred ninety-eight".