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49106681 = 1347179449
BaseRepresentation
bin1011101101010…
…0111011111001
310102101212200222
42323110323321
5100032403211
64512305425
71134254111
oct273247371
9112355628
1049106681
11257a0638
1214542275
13a234910
146744041
1544a01db
hex2ed4ef9

49106681 has 16 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 44018688.

The previous prime is 49106677. The next prime is 49106689. The reversal of 49106681 is 18660194.

It is a cyclic number.

It is not a de Polignac number, because 49106681 - 22 = 49106677 is a prime.

It is a super-2 number, since 2×491066812 = 4822932237671522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49106689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109145 + ... + 109593.

It is an arithmetic number, because the mean of its divisors is an integer number (3402000).

Almost surely, 249106681 is an apocalyptic number.

It is an amenable number.

49106681 is a deficient number, since it is larger than the sum of its proper divisors (5325319).

49106681 is a wasteful number, since it uses less digits than its factorization.

49106681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 49106681 is about 7007.6159284025. The cubic root of 49106681 is about 366.1959420423.

The spelling of 49106681 in words is "forty-nine million, one hundred six thousand, six hundred eighty-one".

Divisors: 1 13 47 179 449 611 2327 5837 8413 21103 80371 109369 274339 1044823 3777437 49106681