20470798800 has 90 divisors (see below), whose sum is σ = 71039370662. Its totient is φ = 5458878720.

The previous prime is 20470798783. The next prime is 20470798801. The reversal of 20470798800 is 889707402.

It can be written as a sum of positive squares in 3 ways, for example, as 263607696 + 20207191104 = 16236^2 + 142152^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470798801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2839567 + ... + 2846766.

Almost surely, 2^20470798800 is an apocalyptic number.

20470798800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20470798800 is an abundant number, since it is smaller than the sum of its proper divisors (50568571862).

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

20470798800 is a wasteful number, since it uses less digits than its factorization.

20470798800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686357 (or 5686343 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 20470798800 in words is "twenty billion, four hundred seventy million, seven hundred ninety-eight thousand, eight hundred".