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68875480 = 2351721887
BaseRepresentation
bin1000001101011…
…11010011011000
311210121020101201
410012233103120
5120113003410
610500123544
71464301102
oct406572330
9153536351
1068875480
1135973193
121b0965b4
1311366a2b
14920c572
1560a783a
hex41af4d8

68875480 has 16 divisors (see below), whose sum is σ = 154969920. Its totient is φ = 27550176.

The previous prime is 68875451. The next prime is 68875481. The reversal of 68875480 is 8457886.

It is a self number, because there is not a number n which added to its sum of digits gives 68875480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68875481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860904 + ... + 860983.

It is an arithmetic number, because the mean of its divisors is an integer number (9685620).

Almost surely, 268875480 is an apocalyptic number.

It is an amenable number.

68875480 is an abundant number, since it is smaller than the sum of its proper divisors (86094440).

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

68875480 is a wasteful number, since it uses less digits than its factorization.

68875480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721898 (or 1721894 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 68875480 is about 8299.1252551097. The cubic root of 68875480 is about 409.9097163887.

The spelling of 68875480 in words is "sixty-eight million, eight hundred seventy-five thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1721887 3443774 6887548 8609435 13775096 17218870 34437740 68875480