20285200100 has 36 divisors (see below), whose sum is σ = 48020603568. Its totient is φ = 7376436000.

The previous prime is 20285200093. The next prime is 20285200151. The reversal of 20285200100 is 100258202.

It is a super-2 number, since 2×20285200100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9219446 + ... + 9221645.

Almost surely, 2^20285200100 is an apocalyptic number.

20285200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20285200100 is an abundant number, since it is smaller than the sum of its proper divisors (27735403468).

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

20285200100 is a wasteful number, since it uses less digits than its factorization.

20285200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18441116 (or 18441109 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 20285200100 its reverse (100258202), we get a palindrome (20385458302).

The spelling of 20285200100 in words is "twenty billion, two hundred eighty-five million, two hundred thousand, one hundred".