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208894922080 = 25513791518419
BaseRepresentation
bin1100001010001100011…
…0111000110101100000
3201222012020122112200221
43002203012320311200
511410304100001310
6235544235052424
721043416353305
oct3024306706540
9658166575627
10208894922080
1180656812879
123459a5a1114
131691109b590
14a1795830ac
1556792e6ada
hex30a31b8d60

208894922080 has 192 divisors, whose sum is σ = 541833062400. Its totient is φ = 75640780800.

The previous prime is 208894922051. The next prime is 208894922087. The reversal of 208894922080 is 80229498802.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208894922087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24808111 + ... + 24816529.

It is an arithmetic number, because the mean of its divisors is an integer number (2822047200).

Almost surely, 2208894922080 is an apocalyptic number.

208894922080 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 208894922080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270916531200).

208894922080 is an abundant number, since it is smaller than the sum of its proper divisors (332938140320).

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

208894922080 is a wasteful number, since it uses less digits than its factorization.

208894922080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8677 (or 8669 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 208894922080 in words is "two hundred eight billion, eight hundred ninety-four million, nine hundred twenty-two thousand, eighty".