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20075028 = 2231798407
BaseRepresentation
bin100110010010…
…1001000010100
31101202220202120
41030211020110
520114400103
61554135540
7332430531
oct114451024
941686676
1020075028
1110371736
1268815b0
13420b61c
142947d88
151b68253
hex1325214

20075028 has 24 divisors (see below), whose sum is σ = 49597632. Its totient is φ = 6297984.

The previous prime is 20074993. The next prime is 20075051. The reversal of 20075028 is 82057002.

It is a junction number, because it is equal to n+sod(n) for n = 20074989 and 20075007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49000 + ... + 49407.

It is an arithmetic number, because the mean of its divisors is an integer number (2066568).

Almost surely, 220075028 is an apocalyptic number.

It is an amenable number.

20075028 is an abundant number, since it is smaller than the sum of its proper divisors (29522604).

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

20075028 is a wasteful number, since it uses less digits than its factorization.

20075028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98431 (or 98429 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 20075028 is about 4480.5164880848. The cubic root of 20075028 is about 271.7807669723.

The spelling of 20075028 in words is "twenty million, seventy-five thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 98407 196814 295221 393628 590442 1180884 1672919 3345838 5018757 6691676 10037514 20075028