20947292760 has 256 divisors, whose sum is σ = 67184640000. Its totient is φ = 5215637504.

The previous prime is 20947292699. The next prime is 20947292761. The reversal of 20947292760 is 6729274902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20947292761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14556121 + ... + 14557559.

It is an arithmetic number, because the mean of its divisors is an integer number (262440000).

Almost surely, 2^20947292760 is an apocalyptic number.

20947292760 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 20947292760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33592320000).

20947292760 is an abundant number, since it is smaller than the sum of its proper divisors (46237347240).

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

20947292760 is a wasteful number, since it uses less digits than its factorization.

20947292760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 20947292760 in words is "twenty billion, nine hundred forty-seven million, two hundred ninety-two thousand, seven hundred sixty".