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830008642 = 23729338281
BaseRepresentation
bin110001011110001…
…110110101000010
32010211210210210211
4301132032311002
53144440234032
6214205544334
726365646161
oct6136166502
92124723724
10830008642
11396577861
121b1b750aa
13102c5ba98
147c33b3d8
154cd03747
hex3178ed42

830008642 has 16 divisors (see below), whose sum is σ = 1283059512. Its totient is φ = 402399360.

The previous prime is 830008591. The next prime is 830008667. The reversal of 830008642 is 246800038.

It is a happy number.

830008642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 691216681 + 138791961 = 26291^2 + 11781^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2542 + ... + 40822.

Almost surely, 2830008642 is an apocalyptic number.

830008642 is a deficient number, since it is larger than the sum of its proper divisors (453050870).

830008642 is a wasteful number, since it uses less digits than its factorization.

830008642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38613.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 830008642 is about 28809.8705654850. The cubic root of 830008642 is about 939.7828991609.

The spelling of 830008642 in words is "eight hundred thirty million, eight thousand, six hundred forty-two".

Divisors: 1 2 37 74 293 586 10841 21682 38281 76562 1416397 2832794 11216333 22432666 415004321 830008642