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7872285 = 352691951
BaseRepresentation
bin11110000001111100011101
3112210221202010
4132001330131
54003403120
6440421433
7123625161
oct36017435
915727663
107872285
114497623
122777879
131828275
14108cca1
15a577e0
hex781f1d

7872285 has 16 divisors (see below), whose sum is σ = 12648960. Its totient is φ = 4180800.

The previous prime is 7872283. The next prime is 7872313. The reversal of 7872285 is 5822787.

It is not a de Polignac number, because 7872285 - 21 = 7872283 is a prime.

It is a super-2 number, since 2×78722852 = 123945742242450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3060 + ... + 5010.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 27872285 is an apocalyptic number.

It is an amenable number.

7872285 is a deficient number, since it is larger than the sum of its proper divisors (4776675).

7872285 is a wasteful number, since it uses less digits than its factorization.

7872285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228.

The product of its digits is 62720, while the sum is 39.

The square root of 7872285 is about 2805.7592555314. The cubic root of 7872285 is about 198.9299939778.

The spelling of 7872285 in words is "seven million, eight hundred seventy-two thousand, two hundred eighty-five".

Divisors: 1 3 5 15 269 807 1345 1951 4035 5853 9755 29265 524819 1574457 2624095 7872285