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8230257 = 327130639
BaseRepresentation
bin11111011001010101110001
3120111010210100
4133121111301
54101332012
6452223013
7126645630
oct37312561
916433710
108230257
114711572
12290aa69
131922199
141143517
15ac88dc
hex7d9571

8230257 has 12 divisors (see below), whose sum is σ = 13586560. Its totient is φ = 4702968.

The previous prime is 8230253. The next prime is 8230267. The reversal of 8230257 is 7520328.

It is not a de Polignac number, because 8230257 - 22 = 8230253 is a prime.

It is a Duffinian number.

8230257 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8230257.

It is not an unprimeable number, because it can be changed into a prime (8230253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65257 + ... + 65382.

Almost surely, 28230257 is an apocalyptic number.

It is an amenable number.

8230257 is a deficient number, since it is larger than the sum of its proper divisors (5356303).

8230257 is a wasteful number, since it uses less digits than its factorization.

8230257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130652 (or 130649 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 8230257 is about 2868.8424494907. The cubic root of 8230257 is about 201.9006880378.

The spelling of 8230257 in words is "eight million, two hundred thirty thousand, two hundred fifty-seven".

Divisors: 1 3 7 9 21 63 130639 391917 914473 1175751 2743419 8230257