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289102680 = 233251797487
BaseRepresentation
bin10001001110110…
…101101101011000
3202010222221022200
4101032311231120
51043002241210
644404250200
710110221646
oct2116655530
9663887280
10289102680
11139211139
12809a0960
1347b83999
142a578196
151a5aa0c0
hex113b5b58

289102680 has 192 divisors, whose sum is σ = 1007173440. Its totient is φ = 71663616.

The previous prime is 289102679. The next prime is 289102691. The reversal of 289102680 is 86201982.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 593397 + ... + 593883.

It is an arithmetic number, because the mean of its divisors is an integer number (5245695).

Almost surely, 2289102680 is an apocalyptic number.

289102680 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 289102680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503586720).

289102680 is an abundant number, since it is smaller than the sum of its proper divisors (718070760).

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

289102680 is a wasteful number, since it uses less digits than its factorization.

289102680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 289102680 is about 17003.0197318006. The cubic root of 289102680 is about 661.2271933463.

The spelling of 289102680 in words is "two hundred eighty-nine million, one hundred two thousand, six hundred eighty".