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8672028 = 223722669
BaseRepresentation
bin100001000101…
…001100011100
3121022120210020
4201011030130
54210001103
6505512140
7133465611
oct41051434
917276706
108672028
114993472
122aa2650
131a482a1
14121a508
15b64753
hex84531c

8672028 has 12 divisors (see below), whose sum is σ = 20234760. Its totient is φ = 2890672.

The previous prime is 8672003. The next prime is 8672047. The reversal of 8672028 is 8202768.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 8672028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361323 + ... + 361346.

It is an arithmetic number, because the mean of its divisors is an integer number (1686230).

Almost surely, 28672028 is an apocalyptic number.

It is an amenable number.

8672028 is an abundant number, since it is smaller than the sum of its proper divisors (11562732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8672028 is a wasteful number, since it uses less digits than its factorization.

8672028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722676 (or 722674 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 8672028 is about 2944.8307251861. The cubic root of 8672028 is about 205.4503523779.

It can be divided in two parts, 867 and 2028, that multiplied together give a square (1758276 = 13262).

The spelling of 8672028 in words is "eight million, six hundred seventy-two thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 722669 1445338 2168007 2890676 4336014 8672028