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70083493 = 2775032
BaseRepresentation
bin1000010110101…
…10001110100101
311212212121110221
410023112032211
5120420132433
610542044341
71510462024
oct413261645
9155777427
1070083493
1136618847
121b5796b1
131169a82c
1494448bb
15624572d
hex42d63a5

70083493 has 6 divisors (see below), whose sum is σ = 70476614. Its totient is φ = 69691656.

The previous prime is 70083487. The next prime is 70083499. The reversal of 70083493 is 39438007.

It is an interprime number because it is at equal distance from previous prime (70083487) and next prime (70083499).

It can be written as a sum of positive squares in only one way, i.e., 49589764 + 20493729 = 7042^2 + 4527^2 .

It is not a de Polignac number, because 70083493 - 213 = 70075301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70083499) 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 5 ways as a sum of consecutive naturals, for example, 139080 + ... + 139582.

Almost surely, 270083493 is an apocalyptic number.

It is an amenable number.

70083493 is a deficient number, since it is larger than the sum of its proper divisors (393121).

70083493 is an frugal number, since it uses more digits than its factorization.

70083493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 70083493 is about 8371.5884394779. The cubic root of 70083493 is about 412.2923212930.

It can be divided in two parts, 7008 and 3493, that added together give a palindrome (10501).

The spelling of 70083493 in words is "seventy million, eighty-three thousand, four hundred ninety-three".

Divisors: 1 277 503 139331 253009 70083493