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20031088000 = 275371171229
BaseRepresentation
bin10010101001111100…
…100010010110000000
31220201000000200222011
4102221330202112000
5312010424304000
613111355422304
71306250303320
oct225174422600
956630020864
1020031088000
11854a032990
123a70454994
131b72c70bc1
14d80499280
157c385c2ba
hex4a9f22580

20031088000 has 512 divisors, whose sum is σ = 63240652800. Its totient is φ = 6128640000.

The previous prime is 20031087997. The next prime is 20031088001. The reversal of 20031088000 is 88013002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031088001) 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, 87471886 + ... + 87472114.

It is an arithmetic number, because the mean of its divisors is an integer number (123516900).

Almost surely, 220031088000 is an apocalyptic number.

20031088000 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 20031088000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31620326400).

20031088000 is an abundant number, since it is smaller than the sum of its proper divisors (43209564800).

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

20031088000 is a wasteful number, since it uses less digits than its factorization.

20031088000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 20031088000 in words is "twenty billion, thirty-one million, eighty-eight thousand".