20820224700 has 648 divisors, whose sum is σ = 79814891520. Its totient is φ = 4488652800.

The previous prime is 20820224693. The next prime is 20820224713. The reversal of 20820224700 is 742202802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 54360709 + ... + 54361091.

Almost surely, 2^20820224700 is an apocalyptic number.

20820224700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20820224700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39907445760).

20820224700 is an abundant number, since it is smaller than the sum of its proper divisors (58994666820).

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

20820224700 is a wasteful number, since it uses less digits than its factorization.

20820224700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The spelling of 20820224700 in words is "twenty billion, eight hundred twenty million, two hundred twenty-four thousand, seven hundred".