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69918484 = 22171028213
BaseRepresentation
bin1000010101011…
…01111100010100
311212120020010111
410022231330110
5120344342414
610534332404
71506203656
oct412557424
9155506114
1069918484
1136515879
121b4ba104
13116406ac
1494006d6
1562118c4
hex42adf14

69918484 has 12 divisors (see below), whose sum is σ = 129554964. Its totient is φ = 32902784.

The previous prime is 69918479. The next prime is 69918517. The reversal of 69918484 is 48481996.

It can be written as a sum of positive squares in 2 ways, for example, as 33315984 + 36602500 = 5772^2 + 6050^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 514039 + ... + 514174.

It is an arithmetic number, because the mean of its divisors is an integer number (10796247).

Almost surely, 269918484 is an apocalyptic number.

It is an amenable number.

69918484 is a deficient number, since it is larger than the sum of its proper divisors (59636480).

69918484 is a wasteful number, since it uses less digits than its factorization.

69918484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028234 (or 1028232 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 69918484 is about 8361.7273335119. The cubic root of 69918484 is about 411.9684913221.

The spelling of 69918484 in words is "sixty-nine million, nine hundred eighteen thousand, four hundred eighty-four".

Divisors: 1 2 4 17 34 68 1028213 2056426 4112852 17479621 34959242 69918484