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3490805760 = 21135138741
BaseRepresentation
bin1101000000010001…
…0111100000000000
3100000021120022021020
43100010113200000
524122121241020
61334220025440
7152335234161
oct32004274000
910007508236
103490805760
111531518042
12815092280
1343829a750
14251887768
151566e2c40
hexd0117800

3490805760 has 192 divisors, whose sum is σ = 12028292640. Its totient is φ = 859176960.

The previous prime is 3490805743. The next prime is 3490805779. The reversal of 3490805760 is 675080943.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394990 + ... + 403730.

Almost surely, 23490805760 is an apocalyptic number.

3490805760 is a gapful number since it is divisible by the number (30) 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 3490805760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6014146320).

3490805760 is an abundant number, since it is smaller than the sum of its proper divisors (8537486880).

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

3490805760 is a wasteful number, since it uses less digits than its factorization.

3490805760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8784 (or 8764 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 3490805760 is about 59083.0412216568. The cubic root of 3490805760 is about 1516.9638378098.

The spelling of 3490805760 in words is "three billion, four hundred ninety million, eight hundred five thousand, seven hundred sixty".