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28210706352 = 243380812
BaseRepresentation
bin11010010001011111…
…010011011110110000
32200211001102100221000
4122101133103132300
5430233420100402
620543153202000
72016042022203
oct322137233660
980731370830
1028210706352
1110a67232254
125573860300
13287778326a
14151895b93a
15b019d7c1c
hex6917d37b0

28210706352 has 60 divisors (see below), whose sum is σ = 80985197320. Its totient is φ = 9402405120.

The previous prime is 28210706299. The next prime is 28210706353. The reversal of 28210706352 is 25360701282.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

28210706352 is a `hidden beast` number, since 2 + 8 + 2 + 10 + 7 + 0 + 635 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28210706353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3486952 + ... + 3495032.

Almost surely, 228210706352 is an apocalyptic number.

It is an amenable number.

28210706352 is an abundant number, since it is smaller than the sum of its proper divisors (52774490968).

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

28210706352 is an frugal number, since it uses more digits than its factorization.

28210706352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16179 (or 8086 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 28210706352 in words is "twenty-eight billion, two hundred ten million, seven hundred six thousand, three hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 8081 16162 24243 32324 48486 64648 72729 96972 129296 145458 193944 218187 290916 387888 436374 581832 872748 1163664 1745496 3490992 65302561 130605122 195907683 261210244 391815366 522420488 587723049 783630732 1044840976 1175446098 1567261464 1763169147 2350892196 3134522928 3526338294 4701784392 7052676588 9403568784 14105353176 28210706352