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29444281 = 191549699
BaseRepresentation
bin111000001010…
…0100010111001
32001101220221221
41300110202321
530014204111
62531032041
7505162246
oct160244271
961356857
1029444281
1115690a19
129a3b621
13613c069
143ca65cd
1528b9371
hex1c148b9

29444281 has 4 divisors (see below), whose sum is σ = 30994000. Its totient is φ = 27894564.

The previous prime is 29444263. The next prime is 29444287. The reversal of 29444281 is 18244492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29444281 - 25 = 29444249 is a prime.

It is a super-2 number, since 2×294442812 = 1733931367213922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29444287) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 774831 + ... + 774868.

It is an arithmetic number, because the mean of its divisors is an integer number (7748500).

Almost surely, 229444281 is an apocalyptic number.

It is an amenable number.

29444281 is a deficient number, since it is larger than the sum of its proper divisors (1549719).

29444281 is a wasteful number, since it uses less digits than its factorization.

29444281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549718.

The product of its digits is 18432, while the sum is 34.

The square root of 29444281 is about 5426.2584715437. The cubic root of 29444281 is about 308.7926713575.

It can be divided in two parts, 2944 and 4281, that added together give a square (7225 = 852).

The spelling of 29444281 in words is "twenty-nine million, four hundred forty-four thousand, two hundred eighty-one".

Divisors: 1 19 1549699 29444281