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317659420 = 225131221767
BaseRepresentation
bin10010111011110…
…001100100011100
3211010201202210201
4102323301210130
51122310100140
651304313244
710605026521
oct2273614434
9733652721
10317659420
11153346251
128a472824
1350a71a70
143028d148
151cd4b49a
hex12ef191c

317659420 has 24 divisors (see below), whose sum is σ = 718399584. Its totient is φ = 117289536.

The previous prime is 317659379. The next prime is 317659421. The reversal of 317659420 is 24956713.

317659420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3176594202 = 201815014229472800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 317659420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317659421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610624 + ... + 611143.

It is an arithmetic number, because the mean of its divisors is an integer number (29933316).

Almost surely, 2317659420 is an apocalyptic number.

It is an amenable number.

317659420 is an abundant number, since it is smaller than the sum of its proper divisors (400740164).

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

317659420 is a wasteful number, since it uses less digits than its factorization.

317659420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221789 (or 1221787 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 317659420 is about 17823.0025528809. The cubic root of 317659420 is about 682.3186563962.

The spelling of 317659420 in words is "three hundred seventeen million, six hundred fifty-nine thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1221767 2443534 4887068 6108835 12217670 15882971 24435340 31765942 63531884 79414855 158829710 317659420