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316871680 = 2105199311
BaseRepresentation
bin10010111000110…
…001010000000000
3211002020202020011
4102320301100000
51122104343210
651235354304
710565236066
oct2270612000
9732222204
10316871680
11152958424
128a152994
1350857348
1430126036
151cc42d8a
hex12e31400

316871680 has 88 divisors (see below), whose sum is σ = 766396800. Its totient is φ = 125706240.

The previous prime is 316871669. The next prime is 316871689. The reversal of 316871680 is 86178613.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316871689) 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, 1018725 + ... + 1019035.

Almost surely, 2316871680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 316871680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383198400).

316871680 is an abundant number, since it is smaller than the sum of its proper divisors (449525120).

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

316871680 is a wasteful number, since it uses less digits than its factorization.

316871680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 316871680 is about 17800.8898653972. The cubic root of 316871680 is about 681.7541790858.

The spelling of 316871680 in words is "three hundred sixteen million, eight hundred seventy-one thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 199 256 311 320 398 512 622 640 796 995 1024 1244 1280 1555 1592 1990 2488 2560 3110 3184 3980 4976 5120 6220 6368 7960 9952 12440 12736 15920 19904 24880 25472 31840 39808 49760 50944 61889 63680 79616 99520 101888 123778 127360 159232 199040 203776 247556 254720 309445 318464 398080 495112 509440 618890 796160 990224 1018880 1237780 1592320 1980448 2475560 3960896 4951120 7921792 9902240 15843584 19804480 31687168 39608960 63374336 79217920 158435840 316871680