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8102972 = 2217911317
BaseRepresentation
bin11110111010010000111100
3120020200012002
4132322100330
54033243342
6445401432
7125605553
oct36722074
916220162
108102972
114634979
122869278
1318a9277
14110cd9a
15aa0d32
hex7ba43c

8102972 has 12 divisors (see below), whose sum is σ = 14260680. Its totient is φ = 4028496.

The previous prime is 8102971. The next prime is 8103019. The reversal of 8102972 is 2792018.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8102971) 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 3 ways as a sum of consecutive naturals, for example, 4943 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (1188390).

Almost surely, 28102972 is an apocalyptic number.

It is an amenable number.

8102972 is a deficient number, since it is larger than the sum of its proper divisors (6157708).

8102972 is a wasteful number, since it uses less digits than its factorization.

8102972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11500 (or 11498 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8102972 is about 2846.5719734446. The cubic root of 8102972 is about 200.8544444252.

The spelling of 8102972 in words is "eight million, one hundred two thousand, nine hundred seventy-two".

Divisors: 1 2 4 179 358 716 11317 22634 45268 2025743 4051486 8102972