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8030128 = 242321821
BaseRepresentation
bin11110101000011110110000
3120002222021011
4132220132300
54023431003
6444040304
7125153311
oct36503660
916088234
108030128
114595177
122833094
131882072
1410d0608
15a8946d
hex7a87b0

8030128 has 20 divisors (see below), whose sum is σ = 16235568. Its totient is φ = 3840320.

The previous prime is 8030123. The next prime is 8030131. The reversal of 8030128 is 8210308.

It is a junction number, because it is equal to n+sod(n) for n = 8030099 and 8030108.

It is not an unprimeable number, because it can be changed into a prime (8030123) 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, 10543 + ... + 11278.

Almost surely, 28030128 is an apocalyptic number.

It is an amenable number.

8030128 is an abundant number, since it is smaller than the sum of its proper divisors (8205440).

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

8030128 is a wasteful number, since it uses less digits than its factorization.

8030128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21852 (or 21846 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 8030128 is about 2833.7480480805. The cubic root of 8030128 is about 200.2507521521.

The spelling of 8030128 in words is "eight million, thirty thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 16 23 46 92 184 368 21821 43642 87284 174568 349136 501883 1003766 2007532 4015064 8030128