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8123272 = 231015409
BaseRepresentation
bin11110111111001110001000
3120021201000221
4132333032020
54034421042
6450035424
7126022003
oct36771610
916251027
108123272
114649153
122878b74
1318b5591
14111653a
15aa6d67
hex7bf388

8123272 has 8 divisors (see below), whose sum is σ = 15231150. Its totient is φ = 4061632.

The previous prime is 8123267. The next prime is 8123273. The reversal of 8123272 is 2723218.

It can be written as a sum of positive squares in only one way, i.e., 7584516 + 538756 = 2754^2 + 734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8123273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507697 + ... + 507712.

Almost surely, 28123272 is an apocalyptic number.

It is an amenable number.

8123272 is a deficient number, since it is larger than the sum of its proper divisors (7107878).

8123272 is a wasteful number, since it uses less digits than its factorization.

8123272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015415 (or 1015411 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 8123272 is about 2850.1354353785. The cubic root of 8123272 is about 201.0220349926.

The spelling of 8123272 in words is "eight million, one hundred twenty-three thousand, two hundred seventy-two".

Divisors: 1 2 4 8 1015409 2030818 4061636 8123272