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68214760 = 2351705369
BaseRepresentation
bin1000001000011…
…01111111101000
311202100200001121
410010031333220
5114430333020
610434025024
71455546565
oct404157750
9152320047
1068214760
1135561839
121aa18174
1311195083
1490b986c
155ec6baa
hex410dfe8

68214760 has 16 divisors (see below), whose sum is σ = 153483300. Its totient is φ = 27285888.

The previous prime is 68214721. The next prime is 68214767. The reversal of 68214760 is 6741286.

It can be written as a sum of positive squares in 2 ways, for example, as 65836996 + 2377764 = 8114^2 + 1542^2 .

It is not an unprimeable number, because it can be changed into a prime (68214767) 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, 852645 + ... + 852724.

Almost surely, 268214760 is an apocalyptic number.

It is an amenable number.

68214760 is an abundant number, since it is smaller than the sum of its proper divisors (85268540).

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

68214760 is a wasteful number, since it uses less digits than its factorization.

68214760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705380 (or 1705376 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68214760 is about 8259.2227237192. Note that the first 3 decimals coincide. The cubic root of 68214760 is about 408.5947528653.

The spelling of 68214760 in words is "sixty-eight million, two hundred fourteen thousand, seven hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 1705369 3410738 6821476 8526845 13642952 17053690 34107380 68214760