20570072600 has 576 divisors, whose sum is σ = 65189577600. Its totient is φ = 6000825600.

The previous prime is 20570072557. The next prime is 20570072651. The reversal of 20570072600 is 627007502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 247832159 + ... + 247832241.

It is an arithmetic number, because the mean of its divisors is an integer number (113176350).

Almost surely, 2^20570072600 is an apocalyptic number.

20570072600 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 20570072600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32594788800).

20570072600 is an abundant number, since it is smaller than the sum of its proper divisors (44619505000).

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

20570072600 is a wasteful number, since it uses less digits than its factorization.

20570072600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The spelling of 20570072600 in words is "twenty billion, five hundred seventy million, seventy-two thousand, six hundred".