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628286072 = 23194397991
BaseRepresentation
bin100101011100101…
…110001001111000
31121210020020110112
4211130232021320
52241320123242
6142202203452
721366225551
oct4534561170
91553206415
10628286072
112a2718697
121564b3588
13a022070b
145d62b328
153a258c82
hex2572e278

628286072 has 64 divisors (see below), whose sum is σ = 1283251200. Its totient is φ = 287400960.

The previous prime is 628286059. The next prime is 628286077. The reversal of 628286072 is 270682826.

628286072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628286077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 633497 + ... + 634487.

It is an arithmetic number, because the mean of its divisors is an integer number (20050800).

Almost surely, 2628286072 is an apocalyptic number.

It is an amenable number.

628286072 is an abundant number, since it is smaller than the sum of its proper divisors (654965128).

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

628286072 is a wasteful number, since it uses less digits than its factorization.

628286072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 628286072 is about 25065.6352801999. The cubic root of 628286072 is about 856.4837826346.

The spelling of 628286072 in words is "six hundred twenty-eight million, two hundred eighty-six thousand, seventy-two".

Divisors: 1 2 4 8 19 38 43 76 86 97 152 172 194 344 388 776 817 991 1634 1843 1982 3268 3686 3964 4171 6536 7372 7928 8342 14744 16684 18829 33368 37658 42613 75316 79249 85226 96127 150632 158498 170452 192254 316996 340904 384508 633992 769016 809647 1619294 1826413 3238588 3652826 4133461 6477176 7305652 8266922 14611304 16533844 33067688 78535759 157071518 314143036 628286072