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68071470 = 2352269049
BaseRepresentation
bin1000000111010…
…11000000101110
311202002101111120
410003223000232
5114411241340
610431001410
71454412045
oct403530056
9152071446
1068071470
1135474115
121a969266
1311144a9c
14907d55c
155e994d0
hex40eb02e

68071470 has 16 divisors (see below), whose sum is σ = 163371600. Its totient is φ = 18152384.

The previous prime is 68071469. The next prime is 68071477. The reversal of 68071470 is 7417086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68071477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1134495 + ... + 1134554.

It is an arithmetic number, because the mean of its divisors is an integer number (10210725).

Almost surely, 268071470 is an apocalyptic number.

68071470 is an abundant number, since it is smaller than the sum of its proper divisors (95300130).

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

68071470 is a wasteful number, since it uses less digits than its factorization.

68071470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269059.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 68071470 is about 8250.5436184533. The cubic root of 68071470 is about 408.3084581080.

The spelling of 68071470 in words is "sixty-eight million, seventy-one thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 2269049 4538098 6807147 11345245 13614294 22690490 34035735 68071470