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8280401 = 41201961
BaseRepresentation
bin11111100101100101010001
3120120200120112
4133211211101
54104433101
6453251105
7130245053
oct37454521
916520515
108280401
114746208
122933a95
13193bc5c
1411578d3
15ad86bb
hex7e5951

8280401 has 4 divisors (see below), whose sum is σ = 8482404. Its totient is φ = 8078400.

The previous prime is 8280397. The next prime is 8280407. The reversal of 8280401 is 1040828.

8280401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 7756225 = 724^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 8280401 - 22 = 8280397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8280407) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 100940 + ... + 101021.

It is an arithmetic number, because the mean of its divisors is an integer number (2120601).

Almost surely, 28280401 is an apocalyptic number.

It is an amenable number.

8280401 is a deficient number, since it is larger than the sum of its proper divisors (202003).

8280401 is a wasteful number, since it uses less digits than its factorization.

8280401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202002.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 8280401 is about 2877.5685917107. The cubic root of 8280401 is about 202.3098942372.

The spelling of 8280401 in words is "eight million, two hundred eighty thousand, four hundred one".

Divisors: 1 41 201961 8280401