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528031 = 7241313
BaseRepresentation
bin10000000111010011111
3222211022201
42000322133
5113344111
615152331
74326310
oct2007237
9884281
10528031
11330799
122156a7
1315645a
14da607
15a66c1
hex80e9f

528031 has 8 divisors (see below), whose sum is σ = 607904. Its totient is φ = 449280.

The previous prime is 528013. The next prime is 528041. The reversal of 528031 is 130825.

It is a happy number.

528031 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 528031 - 211 = 525983 is a prime.

It is a super-2 number, since 2×5280312 = 557633473922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531 + ... + 1843.

It is an arithmetic number, because the mean of its divisors is an integer number (75988).

2528031 is an apocalyptic number.

528031 is a deficient number, since it is larger than the sum of its proper divisors (79873).

528031 is a wasteful number, since it uses less digits than its factorization.

528031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 528031 is about 726.6574158433. The cubic root of 528031 is about 80.8263821800.

Adding to 528031 its reverse (130825), we get a palindrome (658856).

The spelling of 528031 in words is "five hundred twenty-eight thousand, thirty-one".

Divisors: 1 7 241 313 1687 2191 75433 528031