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67894980420 = 22355919179373
BaseRepresentation
bin111111001110110110…
…110010111101000100
320111020201101100212110
4333032312302331010
52103022103333140
651105053021020
74622333545221
oct771666627504
9214221340773
1067894980420
1126880a45773
12111a9a84770
1365302bcb37
143401220948
151b75906380
hexfcedb2f44

67894980420 has 48 divisors (see below), whose sum is σ = 193328089920. Its totient is φ = 17798457216.

The previous prime is 67894980407. The next prime is 67894980431. The reversal of 67894980420 is 2408949876.

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, 9586147 + ... + 9593226.

It is an arithmetic number, because the mean of its divisors is an integer number (4027668540).

Almost surely, 267894980420 is an apocalyptic number.

67894980420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67894980420 is an abundant number, since it is smaller than the sum of its proper divisors (125433109500).

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

67894980420 is a wasteful number, since it uses less digits than its factorization.

67894980420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19179444 (or 19179442 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 67894980420 in words is "sixty-seven billion, eight hundred ninety-four million, nine hundred eighty thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 59 60 118 177 236 295 354 590 708 885 1180 1770 3540 19179373 38358746 57538119 76717492 95896865 115076238 191793730 230152476 287690595 383587460 575381190 1131583007 1150762380 2263166014 3394749021 4526332028 5657915035 6789498042 11315830070 13578996084 16973745105 22631660140 33947490210 67894980420