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316478808 = 23327161909
BaseRepresentation
bin10010110111010…
…001010101011000
3211001111210022100
4102313101111120
51122004310213
651223123400
710562011512
oct2267212530
9731453270
10316478808
1115270a238
1289ba3560
135074a589
1430062bb2
151cbb6773
hex12dd1558

316478808 has 48 divisors (see below), whose sum is σ = 869216400. Its totient is φ = 104005440.

The previous prime is 316478803. The next prime is 316478857. The reversal of 316478808 is 808874613.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316478803) 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, 25843 + ... + 36066.

It is an arithmetic number, because the mean of its divisors is an integer number (18108675).

Almost surely, 2316478808 is an apocalyptic number.

It is an amenable number.

316478808 is an abundant number, since it is smaller than the sum of its proper divisors (552737592).

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

316478808 is a wasteful number, since it uses less digits than its factorization.

316478808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61992 (or 61985 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 316478808 is about 17789.8512641337. The cubic root of 316478808 is about 681.4723058909.

The spelling of 316478808 in words is "three hundred sixteen million, four hundred seventy-eight thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 71 72 142 213 284 426 568 639 852 1278 1704 2556 5112 61909 123818 185727 247636 371454 495272 557181 742908 1114362 1485816 2228724 4395539 4457448 8791078 13186617 17582156 26373234 35164312 39559851 52746468 79119702 105492936 158239404 316478808