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8672993 = 71238999
BaseRepresentation
bin100001000101…
…011011100001
3121022122002222
4201011123201
54210013433
6505520425
7133501460
oct41053341
917278088
108672993
11499416a
122aa3115
131a48864
14121a9d7
15b64b98
hex8456e1

8672993 has 4 divisors (see below), whose sum is σ = 9912000. Its totient is φ = 7433988.

The previous prime is 8672969. The next prime is 8673011. The reversal of 8672993 is 3992768.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8672993 - 212 = 8668897 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8672933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619493 + ... + 619506.

It is an arithmetic number, because the mean of its divisors is an integer number (2478000).

Almost surely, 28672993 is an apocalyptic number.

It is an amenable number.

8672993 is a deficient number, since it is larger than the sum of its proper divisors (1239007).

8672993 is a wasteful number, since it uses less digits than its factorization.

8672993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239006.

The product of its digits is 163296, while the sum is 44.

The square root of 8672993 is about 2944.9945670578. The cubic root of 8672993 is about 205.4579727498.

The spelling of 8672993 in words is "eight million, six hundred seventy-two thousand, nine hundred ninety-three".

Divisors: 1 7 1238999 8672993