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69830690 = 2529323833
BaseRepresentation
bin1000010100110…
…00100000100010
311212101202200212
410022120200202
5120334040230
610532414122
71505360006
oct412304042
9155352625
1069830690
1136465916
121b477342
131160c747
1493ba706
1561e5895
hex4298822

69830690 has 16 divisors (see below), whose sum is σ = 126129528. Its totient is φ = 27835776.

The previous prime is 69830671. The next prime is 69830699. The reversal of 69830690 is 9603896.

It can be written as a sum of positive squares in 4 ways, for example, as 69772609 + 58081 = 8353^2 + 241^2 .

It is a super-2 number, since 2×698306902 = 9752650531752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (69830699) 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, 8987 + ... + 14846.

Almost surely, 269830690 is an apocalyptic number.

69830690 is a deficient number, since it is larger than the sum of its proper divisors (56298838).

69830690 is a wasteful number, since it uses less digits than its factorization.

69830690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24133.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 69830690 is about 8356.4759318746. The cubic root of 69830690 is about 411.7959880076.

The spelling of 69830690 in words is "sixty-nine million, eight hundred thirty thousand, six hundred ninety".

Divisors: 1 2 5 10 293 586 1465 2930 23833 47666 119165 238330 6983069 13966138 34915345 69830690