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3850721 = 71732359
BaseRepresentation
bin1110101100000111100001
321020122012022
432230013201
51441210341
6214311225
744505410
oct16540741
97218168
103850721
1121a0116
121358515
13a4a944
14723477
15510e4b
hex3ac1e1

3850721 has 8 divisors (see below), whose sum is σ = 4659840. Its totient is φ = 3106368.

The previous prime is 3850703. The next prime is 3850723. The reversal of 3850721 is 1270583.

3850721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3850721 - 26 = 3850657 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3850723) 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 7 ways as a sum of consecutive naturals, for example, 16061 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (582480).

Almost surely, 23850721 is an apocalyptic number.

It is an amenable number.

3850721 is a deficient number, since it is larger than the sum of its proper divisors (809119).

3850721 is a wasteful number, since it uses less digits than its factorization.

3850721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32383.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 3850721 is about 1962.3254062464. The cubic root of 3850721 is about 156.7403038974.

The spelling of 3850721 in words is "three million, eight hundred fifty thousand, seven hundred twenty-one".

Divisors: 1 7 17 119 32359 226513 550103 3850721