20898484920 has 64 divisors (see below), whose sum is σ = 69661620000. Its totient is φ = 5572929024.

The previous prime is 20898484909. The next prime is 20898484927. The reversal of 20898484920 is 2948489802.

20898484920 is a `hidden beast` number, since 20 + 8 + 98 + 48 + 492 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20898484927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9674145 + ... + 9676304.

Almost surely, 2^20898484920 is an apocalyptic number.

20898484920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20898484920 is an abundant number, since it is smaller than the sum of its proper divisors (48763135080).

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

20898484920 is a wasteful number, since it uses less digits than its factorization.

20898484920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19350469 (or 19350459 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 20898484920 in words is "twenty billion, eight hundred ninety-eight million, four hundred eighty-four thousand, nine hundred twenty".