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8431293 = 313534079
BaseRepresentation
bin100000001010…
…011010111101
3120212100120010
4200022122331
54124300133
6500413433
7131444013
oct40123275
916770503
108431293
114839612
1229a7279
131992840
1411968b3
15b18263
hex80a6bd

8431293 has 16 divisors (see below), whose sum is σ = 12337920. Its totient is φ = 5089344.

The previous prime is 8431289. The next prime is 8431327. The reversal of 8431293 is 3921348.

It is not a de Polignac number, because 8431293 - 22 = 8431289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8431293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8431243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28 + ... + 4106.

It is an arithmetic number, because the mean of its divisors is an integer number (771120).

Almost surely, 28431293 is an apocalyptic number.

It is an amenable number.

8431293 is a deficient number, since it is larger than the sum of its proper divisors (3906627).

8431293 is a wasteful number, since it uses less digits than its factorization.

8431293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148.

The product of its digits is 5184, while the sum is 30.

The square root of 8431293 is about 2903.6688860819. The cubic root of 8431293 is about 203.5313878422.

The spelling of 8431293 in words is "eight million, four hundred thirty-one thousand, two hundred ninety-three".

Divisors: 1 3 13 39 53 159 689 2067 4079 12237 53027 159081 216187 648561 2810431 8431293