Search a number
-
+
1028984 = 231121063
BaseRepresentation
bin11111011001101111000
31221021111112
43323031320
5230411414
634015452
711513645
oct3731570
91837445
101028984
11643100
12417588
132a0488
141cadcc
15154d3e
hexfb378

1028984 has 24 divisors (see below), whose sum is σ = 2122680. Its totient is φ = 467280.

The previous prime is 1028981. The next prime is 1028999. The reversal of 1028984 is 4898201.

It is a happy number.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1028984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028981) 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 5 ways as a sum of consecutive naturals, for example, 437 + ... + 1499.

It is an arithmetic number, because the mean of its divisors is an integer number (88445).

21028984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1028984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061340).

1028984 is an abundant number, since it is smaller than the sum of its proper divisors (1093696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028984 is a wasteful number, since it uses less digits than its factorization.

1028984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1028984 is about 1014.3884857391. The cubic root of 1028984 is about 100.9569466537.

The spelling of 1028984 in words is "one million, twenty-eight thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 11 22 44 88 121 242 484 968 1063 2126 4252 8504 11693 23386 46772 93544 128623 257246 514492 1028984