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20770068 = 22311157349
BaseRepresentation
bin100111100111…
…0110100010100
31110002020011210
41033032310110
520304120233
62021101420
7341354064
oct117166424
943066153
1020770068
11107a6950
126b57870
1343c2aa7
142a893a4
151c54163
hex13ced14

20770068 has 24 divisors (see below), whose sum is σ = 52869600. Its totient is φ = 6293920.

The previous prime is 20770049. The next prime is 20770109. The reversal of 20770068 is 86007702.

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 7 ways as a sum of consecutive naturals, for example, 78543 + ... + 78806.

It is an arithmetic number, because the mean of its divisors is an integer number (2202900).

Almost surely, 220770068 is an apocalyptic number.

It is an amenable number.

20770068 is an abundant number, since it is smaller than the sum of its proper divisors (32099532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20770068 is a wasteful number, since it uses less digits than its factorization.

20770068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157367 (or 157365 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 20770068 is about 4557.4190064114. The cubic root of 20770068 is about 274.8817916198.

The spelling of 20770068 in words is "twenty million, seven hundred seventy thousand, sixty-eight".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 157349 314698 472047 629396 944094 1730839 1888188 3461678 5192517 6923356 10385034 20770068