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20347929360 = 243251141223281
BaseRepresentation
bin10010111100110101…
…001100001100010000
31221112002012220121100
4102330311030030100
5313133032214420
613203034424400
71320145355133
oct227465141420
957462186540
1020347929360
1186a196a550
123b3a592100
131bc37b74b5
14db05b421a
157e1596190
hex4bcd4c310

20347929360 has 480 divisors, whose sum is σ = 76981072896. Its totient is φ = 4773888000.

The previous prime is 20347929341. The next prime is 20347929419. The reversal of 20347929360 is 6392974302.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72412420 + ... + 72412700.

Almost surely, 220347929360 is an apocalyptic number.

20347929360 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 20347929360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38490536448).

20347929360 is an abundant number, since it is smaller than the sum of its proper divisors (56633143536).

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

20347929360 is a wasteful number, since it uses less digits than its factorization.

20347929360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 20347929360 in words is "twenty billion, three hundred forty-seven million, nine hundred twenty-nine thousand, three hundred sixty".