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90706445347 = 742193071359
BaseRepresentation
bin101010001111010000…
…1101000010000100011
322200010111011211221211
41110132201220100203
52441231322222342
6105400413530551
76360535030660
oct1243641502043
9280114154854
1090706445347
1135517472a21
12156b54a3a57
1387272aa28b
144566a72a67
15255d3c3c17
hex151e868423

90706445347 has 8 divisors (see below), whose sum is σ = 103689113600. Its totient is φ = 77729928264.

The previous prime is 90706445329. The next prime is 90706445353. The reversal of 90706445347 is 74354460709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-90706445347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90706445347.

It is not an unprimeable number, because it can be changed into a prime (90706445147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1506147 + ... + 1565212.

It is an arithmetic number, because the mean of its divisors is an integer number (12961139200).

Almost surely, 290706445347 is an apocalyptic number.

90706445347 is a deficient number, since it is larger than the sum of its proper divisors (12982668253).

90706445347 is a wasteful number, since it uses less digits than its factorization.

90706445347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075585.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 90706445347 in words is "ninety billion, seven hundred six million, four hundred forty-five thousand, three hundred forty-seven".

Divisors: 1 7 4219 29533 3071359 21499513 12958063621 90706445347