20260970730 has 192 divisors, whose sum is σ = 70729521408. Its totient is φ = 3886202880.

The previous prime is 20260970729. The next prime is 20260970747. The reversal of 20260970730 is 3707906202.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22359 + ... + 202538.

It is an arithmetic number, because the mean of its divisors is an integer number (368382924).

Almost surely, 2^20260970730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20260970730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35364760704).

20260970730 is an abundant number, since it is smaller than the sum of its proper divisors (50468550678).

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

20260970730 is a wasteful number, since it uses less digits than its factorization.

20260970730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224941 (or 224938 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The spelling of 20260970730 in words is "twenty billion, two hundred sixty million, nine hundred seventy thousand, seven hundred thirty".