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2951320680 = 2332571129679
BaseRepresentation
bin1010111111101001…
…1001010001101000
321121200102121212100
42233322121101220
522021014230210
61204505013400
7133064545320
oct25772312150
97550377770
102951320680
111284a41a00
126a4484260
1338059c2c9
141ddd74280
1512417a5c0
hexafe99468

2951320680 has 288 divisors, whose sum is σ = 12050438400. Its totient is φ = 613198080.

The previous prime is 2951320667. The next prime is 2951320699. The reversal of 2951320680 is 860231592.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 300081 + ... + 309759.

It is an arithmetic number, because the mean of its divisors is an integer number (41841800).

Almost surely, 22951320680 is an apocalyptic number.

2951320680 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 2951320680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6025219200).

2951320680 is an abundant number, since it is smaller than the sum of its proper divisors (9099117720).

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

2951320680 is a wasteful number, since it uses less digits than its factorization.

2951320680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9725 (or 9707 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2951320680 is about 54326.0589404385. The cubic root of 2951320680 is about 1434.4061336885.

The spelling of 2951320680 in words is "two billion, nine hundred fifty-one million, three hundred twenty thousand, six hundred eighty".