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8280069 = 372233179
BaseRepresentation
bin11111100101100000000101
3120120200010020
4133211200011
54104430234
6453245353
7130244100
oct37454005
916520106
108280069
114745a36
122933859
13193ba65
141157737
15ad8549
hex7e5805

8280069 has 48 divisors (see below), whose sum is σ = 14008320. Its totient is φ = 4324320.

The previous prime is 8280053. The next prime is 8280127. The reversal of 8280069 is 9600828.

It is not a de Polignac number, because 8280069 - 24 = 8280053 is a prime.

It is a super-2 number, since 2×82800692 = 137119085289522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8280049) 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 47 ways as a sum of consecutive naturals, for example, 104772 + ... + 104850.

It is an arithmetic number, because the mean of its divisors is an integer number (291840).

Almost surely, 28280069 is an apocalyptic number.

It is an amenable number.

8280069 is a deficient number, since it is larger than the sum of its proper divisors (5728251).

8280069 is a wasteful number, since it uses less digits than its factorization.

8280069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8280069 is about 2877.5109035415. The cubic root of 8280069 is about 202.3071903512.

The spelling of 8280069 in words is "eight million, two hundred eighty thousand, sixty-nine".

Divisors: 1 3 7 21 23 31 49 69 79 93 147 161 217 237 483 553 651 713 1127 1519 1659 1817 2139 2449 3381 3871 4557 4991 5451 7347 11613 12719 14973 17143 34937 38157 51429 56327 89033 104811 120001 168981 267099 360003 394289 1182867 2760023 8280069