20672272080 has 240 divisors, whose sum is σ = 73903752000. Its totient is φ = 5163485184.

The previous prime is 20672272073. The next prime is 20672272091. The reversal of 20672272080 is 8027227602.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1209031 + ... + 1226009.

It is an arithmetic number, because the mean of its divisors is an integer number (307932300).

Almost surely, 2^20672272080 is an apocalyptic number.

20672272080 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 20672272080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36951876000).

20672272080 is an abundant number, since it is smaller than the sum of its proper divisors (53231479920).

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

20672272080 is a wasteful number, since it uses less digits than its factorization.

20672272080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17106 (or 17097 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

Adding to 20672272080 its reverse (8027227602), we get a palindrome (28699499682).

The spelling of 20672272080 in words is "twenty billion, six hundred seventy-two million, two hundred seventy-two thousand, eighty".