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68154932 = 2276922157
BaseRepresentation
bin1000000111111…
…11011000110100
311202020121222202
410003333120310
5114421424212
610432444032
71455210266
oct403773064
9152217882
1068154932
113552089a
121a9a9618
1311173a81
1490a1b36
155eb40c2
hex40ff634

68154932 has 12 divisors (see below), whose sum is σ = 119431620. Its totient is φ = 34031616.

The previous prime is 68154893. The next prime is 68154937. The reversal of 68154932 is 23945186.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43612816 + 24542116 = 6604^2 + 4954^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68154937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8003 + ... + 14154.

It is an arithmetic number, because the mean of its divisors is an integer number (9952635).

Almost surely, 268154932 is an apocalyptic number.

It is an amenable number.

68154932 is a deficient number, since it is larger than the sum of its proper divisors (51276688).

68154932 is a wasteful number, since it uses less digits than its factorization.

68154932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22930 (or 22928 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 68154932 is about 8255.6000387616. The cubic root of 68154932 is about 408.4752647613.

The spelling of 68154932 in words is "sixty-eight million, one hundred fifty-four thousand, nine hundred thirty-two".

Divisors: 1 2 4 769 1538 3076 22157 44314 88628 17038733 34077466 68154932