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70030975 = 52723127137
BaseRepresentation
bin1000010110010…
…01011001111111
311212202221102211
410023021121333
5120411442400
610541001251
71510152640
oct413113177
9155687384
1070030975
1136592343
121b553227
131167c961
14942d6c7
156234dba
hex42c967f

70030975 has 48 divisors (see below), whose sum is σ = 105136128. Its totient is φ = 45239040.

The previous prime is 70030963. The next prime is 70030981. The reversal of 70030975 is 57903007.

It is not a de Polignac number, because 70030975 - 27 = 70030847 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 511107 + ... + 511243.

It is an arithmetic number, because the mean of its divisors is an integer number (2190336).

Almost surely, 270030975 is an apocalyptic number.

70030975 is a deficient number, since it is larger than the sum of its proper divisors (35105153).

70030975 is a wasteful number, since it uses less digits than its factorization.

70030975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 6615, while the sum is 31.

The square root of 70030975 is about 8368.4511709157. The cubic root of 70030975 is about 412.1893099749.

The spelling of 70030975 in words is "seventy million, thirty thousand, nine hundred seventy-five".

Divisors: 1 5 7 23 25 35 115 127 137 161 175 575 635 685 805 889 959 2921 3151 3175 3425 4025 4445 4795 14605 15755 17399 20447 22057 22225 23975 73025 78775 86995 102235 110285 121793 400177 434975 511175 551425 608965 2000885 2801239 3044825 10004425 14006195 70030975