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68876880 = 2435286987
BaseRepresentation
bin1000001101011…
…11101001010000
311210121022022120
410012233221100
5120113030010
610500134240
71464305142
oct406575120
9153538276
1068876880
1135974246
121b097380
1311367567
14920cc92
1560a7e70
hex41afa50

68876880 has 40 divisors (see below), whose sum is σ = 213519072. Its totient is φ = 18367104.

The previous prime is 68876879. The next prime is 68876917. The reversal of 68876880 is 8867886.

It is a tau number, because it is divible by the number of its divisors (40).

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, 143254 + ... + 143733.

Almost surely, 268876880 is an apocalyptic number.

68876880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68876880 is an abundant number, since it is smaller than the sum of its proper divisors (144642192).

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

68876880 is a wasteful number, since it uses less digits than its factorization.

68876880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287003 (or 286997 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 68876880 is about 8299.2096009198. The cubic root of 68876880 is about 409.9124937183.

The spelling of 68876880 in words is "sixty-eight million, eight hundred seventy-six thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 286987 573974 860961 1147948 1434935 1721922 2295896 2869870 3443844 4304805 4591792 5739740 6887688 8609610 11479480 13775376 17219220 22958960 34438440 68876880