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8248428 = 2232229123
BaseRepresentation
bin11111011101110001101100
3120112001201100
4133131301230
54102422203
6452443100
7130052616
oct37356154
916461640
108248428
114724191
122919490
13192a536
141149db6
15acdea3
hex7ddc6c

8248428 has 18 divisors (see below), whose sum is σ = 20850284. Its totient is φ = 2749464.

The previous prime is 8248423. The next prime is 8248459.

8248428 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 229123 = 8248428 / (8 + 2 + 4 + 8 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 8248392 and 8248401.

It is not an unprimeable number, because it can be changed into a prime (8248423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114526 + ... + 114597.

Almost surely, 28248428 is an apocalyptic number.

It is an amenable number.

8248428 is an abundant number, since it is smaller than the sum of its proper divisors (12601856).

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

8248428 is a wasteful number, since it uses less digits than its factorization.

8248428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229133 (or 229128 counting only the distinct ones).

The product of its digits is 32768, while the sum is 36.

The square root of 8248428 is about 2872.0076601569. The cubic root of 8248428 is about 202.0491662173.

The spelling of 8248428 in words is "eight million, two hundred forty-eight thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 229123 458246 687369 916492 1374738 2062107 2749476 4124214 8248428