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8376121 = 1317151251
BaseRepresentation
bin11111111100111100111001
3120202112212201
4133330330321
54121013441
6455310201
7131124115
oct37747471
916675781
108376121
114801116
12297b361
1319736b0
141180745
15b06c31
hex7fcf39

8376121 has 16 divisors (see below), whose sum is σ = 9652608. Its totient is φ = 7200000.

The previous prime is 8376113. The next prime is 8376149. The reversal of 8376121 is 1216738.

It is a 5-Lehmer number, since φ(8376121) divides (8376121-1)5.

It is a cyclic number.

It is not a de Polignac number, because 8376121 - 23 = 8376113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8376121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8376191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33246 + ... + 33496.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 28376121 is an apocalyptic number.

It is an amenable number.

8376121 is a deficient number, since it is larger than the sum of its proper divisors (1276487).

8376121 is a wasteful number, since it uses less digits than its factorization.

8376121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its digits is 2016, while the sum is 28.

The square root of 8376121 is about 2894.1528985180. The cubic root of 8376121 is about 203.0864653055.

The spelling of 8376121 in words is "eight million, three hundred seventy-six thousand, one hundred twenty-one".

Divisors: 1 13 17 151 221 251 1963 2567 3263 4267 33371 37901 55471 492713 644317 8376121