20471892000 has 768 divisors, whose sum is σ = 82121195520. Its totient is φ = 4354560000.

The previous prime is 20471891969. The next prime is 20471892011. The reversal of 20471892000 is 29817402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 161195937 + ... + 161196063.

It is an arithmetic number, because the mean of its divisors is an integer number (106928640).

Almost surely, 2^20471892000 is an apocalyptic number.

20471892000 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 20471892000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41060597760).

20471892000 is an abundant number, since it is smaller than the sum of its proper divisors (61649303520).

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

20471892000 is a wasteful number, since it uses less digits than its factorization.

20471892000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The spelling of 20471892000 in words is "twenty billion, four hundred seventy-one million, eight hundred ninety-two thousand".