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68602246890 = 23511320236651
BaseRepresentation
bin111111111001000000…
…110011011011101010
320120002000020020001220
4333321000303123222
52110444133400030
651303200122510
74646012322462
oct777100633352
9216060206056
1068602246890
11271041a8511
1211366906436
1366139a47c8
14346b12aba2
151bb7a61a10
hexff90336ea

68602246890 has 32 divisors (see below), whose sum is σ = 166102439616. Its totient is φ = 18132038400.

The previous prime is 68602246883. The next prime is 68602246931. The reversal of 68602246890 is 9864220686.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10114936 + ... + 10121715.

It is an arithmetic number, because the mean of its divisors is an integer number (5190701238).

Almost surely, 268602246890 is an apocalyptic number.

68602246890 is an abundant number, since it is smaller than the sum of its proper divisors (97500192726).

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

68602246890 is a wasteful number, since it uses less digits than its factorization.

68602246890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20236774.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 68602246890 in words is "sixty-eight billion, six hundred two million, two hundred forty-six thousand, eight hundred ninety".

Divisors: 1 2 3 5 6 10 15 30 113 226 339 565 678 1130 1695 3390 20236651 40473302 60709953 101183255 121419906 202366510 303549765 607099530 2286741563 4573483126 6860224689 11433707815 13720449378 22867415630 34301123445 68602246890