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70106919 = 347948787
BaseRepresentation
bin1000010110110…
…11111100100111
311212220210121120
410023123330213
5120421410134
610542345023
71510620231
oct413337447
9155823546
1070106919
1136634403
121b58b173
13116a83ac
14944d251
15624c649
hex42dbf27

70106919 has 8 divisors (see below), whose sum is σ = 93672960. Its totient is φ = 46639416.

The previous prime is 70106917. The next prime is 70106923. The reversal of 70106919 is 91960107.

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

It is not a de Polignac number, because 70106919 - 21 = 70106917 is a prime.

It is a super-3 number, since 3×701069193 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 70106919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70106917) 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, 22957 + ... + 25830.

It is an arithmetic number, because the mean of its divisors is an integer number (11709120).

Almost surely, 270106919 is an apocalyptic number.

70106919 is a deficient number, since it is larger than the sum of its proper divisors (23566041).

70106919 is a wasteful number, since it uses less digits than its factorization.

70106919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49269.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 70106919 is about 8372.9874596825. The cubic root of 70106919 is about 412.3382535735.

The spelling of 70106919 in words is "seventy million, one hundred six thousand, nine hundred nineteen".

Divisors: 1 3 479 1437 48787 146361 23368973 70106919