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8282421 = 32732683
BaseRepresentation
bin11111100110000100110101
3120120210100100
4133212010311
54110014141
6453304313
7130254000
oct37460465
916523310
108282421
114747784
122935099
13193cb54
141158537
15ad90b6
hex7e6135

8282421 has 24 divisors (see below), whose sum is σ = 13956800. Its totient is φ = 4731048.

The previous prime is 8282419. The next prime is 8282437. The reversal of 8282421 is 1242828.

It is not a de Polignac number, because 8282421 - 21 = 8282419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8282401) 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 23 ways as a sum of consecutive naturals, for example, 1746 + ... + 4428.

Almost surely, 28282421 is an apocalyptic number.

It is an amenable number.

8282421 is a deficient number, since it is larger than the sum of its proper divisors (5674379).

8282421 is a wasteful number, since it uses less digits than its factorization.

8282421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 2693 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 8282421 is about 2877.9195610719. The cubic root of 8282421 is about 202.3263440348.

It can be divided in two parts, 828 and 2421, that added together give a square (3249 = 572).

The spelling of 8282421 in words is "eight million, two hundred eighty-two thousand, four hundred twenty-one".

Divisors: 1 3 7 9 21 49 63 147 343 441 1029 2683 3087 8049 18781 24147 56343 131467 169029 394401 920269 1183203 2760807 8282421