20296630272 has 144 divisors (see below), whose sum is σ = 54961949952. Its totient is φ = 6661079040.

The previous prime is 20296630247. The next prime is 20296630273. The reversal of 20296630272 is 27203669202.

It is a self number, because there is not a number n which added to its sum of digits gives 20296630272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20296630273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27917973 + ... + 27918699.

It is an arithmetic number, because the mean of its divisors is an integer number (381680208).

Almost surely, 2^20296630272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20296630272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27480974976).

20296630272 is an abundant number, since it is smaller than the sum of its proper divisors (34665319680).

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

20296630272 is an frugal number, since it uses more digits than its factorization.

20296630272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835 (or 803 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 20296630272 in words is "twenty billion, two hundred ninety-six million, six hundred thirty thousand, two hundred seventy-two".