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207152768 = 2713711813
BaseRepresentation
bin11000101100011…
…10011010000000
3112102210110011202
430112032122000
5411012342033
632320000332
75063524634
oct1426163200
9472713152
10207152768
11a6a28a39
12594600a8
1333bbcc04
141d724dc4
15132bd8e8
hexc58e680

207152768 has 32 divisors (see below), whose sum is σ = 415734660. Its totient is φ = 102811648.

The previous prime is 207152761. The next prime is 207152797. The reversal of 207152768 is 867251702.

It can be written as a sum of positive squares in 2 ways, for example, as 207129664 + 23104 = 14392^2 + 152^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (207152761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11630 + ... + 23442.

Almost surely, 2207152768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 207152768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207867330).

207152768 is an abundant number, since it is smaller than the sum of its proper divisors (208581892).

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

207152768 is a wasteful number, since it uses less digits than its factorization.

207152768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11964 (or 11952 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 207152768 is about 14392.8026457671. The cubic root of 207152768 is about 591.6936569406.

The spelling of 207152768 in words is "two hundred seven million, one hundred fifty-two thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 128 137 274 548 1096 2192 4384 8768 11813 17536 23626 47252 94504 189008 378016 756032 1512064 1618381 3236762 6473524 12947048 25894096 51788192 103576384 207152768