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470257 = 4211117
BaseRepresentation
bin1110010110011110001
3212220001221
41302303301
5110022012
614025041
73666004
oct1626361
9786057
10470257
112a1347
121a8181
13136078
14c353b
1594507
hex72cf1

470257 has 4 divisors (see below), whose sum is σ = 471796. Its totient is φ = 468720.

The previous prime is 470251. The next prime is 470263. The reversal of 470257 is 752074.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (470251) and next prime (470263).

It can be written as a sum of positive squares in 2 ways, for example, as 9216 + 461041 = 96^2 + 679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-470257 is a prime.

It is a super-2 number, since 2×4702572 = 442283292098, which contains 22 as substring.

It is a Duffinian number.

470257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (470251) 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 3 ways as a sum of consecutive naturals, for example, 138 + ... + 979.

It is an arithmetic number, because the mean of its divisors is an integer number (117949).

2470257 is an apocalyptic number.

It is an amenable number.

470257 is a deficient number, since it is larger than the sum of its proper divisors (1539).

470257 is a wasteful number, since it uses less digits than its factorization.

470257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 470257 is about 685.7528709382. The cubic root of 470257 is about 77.7639698088.

It can be divided in two parts, 470 and 257, that added together give a palindrome (727).

The spelling of 470257 in words is "four hundred seventy thousand, two hundred fifty-seven".

Divisors: 1 421 1117 470257