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8147968 = 21073109
BaseRepresentation
bin11111000101010000000000
3120022221220121
4133011100000
54041213333
6450350024
7126154003
oct37052000
916287817
108147968
114665764
12288b314
1318c38aa
14112153a
15aae32d
hex7c5400

8147968 has 44 divisors (see below), whose sum is σ = 16662580. Its totient is φ = 3981312.

The previous prime is 8147963. The next prime is 8147977. The reversal of 8147968 is 8697418.

It can be written as a sum of positive squares in 2 ways, for example, as 5161984 + 2985984 = 2272^2 + 1728^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8147963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74698 + ... + 74806.

It is an arithmetic number, because the mean of its divisors is an integer number (378695).

Almost surely, 28147968 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 8147968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8331290).

8147968 is an abundant number, since it is smaller than the sum of its proper divisors (8514612).

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

8147968 is a wasteful number, since it uses less digits than its factorization.

8147968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 184 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 8147968 is about 2854.4645732606. The cubic root of 8147968 is about 201.2255415668.

It can be divided in two parts, 8 and 147968, that multiplied together give a square (1183744 = 10882).

The spelling of 8147968 in words is "eight million, one hundred forty-seven thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 73 109 128 146 218 256 292 436 512 584 872 1024 1168 1744 2336 3488 4672 6976 7957 9344 13952 15914 18688 27904 31828 37376 55808 63656 74752 111616 127312 254624 509248 1018496 2036992 4073984 8147968