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69308830 = 2517407699
BaseRepresentation
bin1000010000110…
…01000110011110
311211102020211201
410020121012132
5120220340310
610513310114
71501054363
oct410310636
9154366751
1069308830
1136139828
121b26533a
1311489056
1492c246a
156140e3a
hex421919e

69308830 has 16 divisors (see below), whose sum is σ = 132094800. Its totient is φ = 26092672.

The previous prime is 69308801. The next prime is 69308861. The reversal of 69308830 is 3880396.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 69308830.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203680 + ... + 204019.

It is an arithmetic number, because the mean of its divisors is an integer number (8255925).

Almost surely, 269308830 is an apocalyptic number.

69308830 is a deficient number, since it is larger than the sum of its proper divisors (62785970).

69308830 is a wasteful number, since it uses less digits than its factorization.

69308830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407723.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 69308830 is about 8325.1924902671. The cubic root of 69308830 is about 410.7676081782.

The spelling of 69308830 in words is "sixty-nine million, three hundred eight thousand, eight hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 407699 815398 2038495 4076990 6930883 13861766 34654415 69308830