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487478472 = 233132313877
BaseRepresentation
bin11101000011100…
…101010011001000
31020222021110202020
4131003211103020
51444243302342
6120212204440
715036333015
oct3503452310
91228243666
10487478472
11230194878
12117309720
1379cbc900
1448a5670c
152cbe30ec
hex1d0e54c8

487478472 has 96 divisors (see below), whose sum is σ = 1362574080. Its totient is φ = 145117440.

The previous prime is 487478461. The next prime is 487478507. The reversal of 487478472 is 274874784.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123798 + ... + 127674.

It is an arithmetic number, because the mean of its divisors is an integer number (14193480).

Almost surely, 2487478472 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 487478472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681287040).

487478472 is an abundant number, since it is smaller than the sum of its proper divisors (875095608).

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

487478472 is a wasteful number, since it uses less digits than its factorization.

487478472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943 (or 3926 counting only the distinct ones).

The product of its digits is 2809856, while the sum is 51.

The square root of 487478472 is about 22078.9146472375. The cubic root of 487478472 is about 787.0188730568.

The spelling of 487478472 in words is "four hundred eighty-seven million, four hundred seventy-eight thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 13 24 26 31 39 52 62 78 93 104 124 156 169 186 248 312 338 372 403 507 676 744 806 1014 1209 1352 1612 2028 2418 3224 3877 4056 4836 5239 7754 9672 10478 11631 15508 15717 20956 23262 31016 31434 41912 46524 50401 62868 93048 100802 120187 125736 151203 201604 240374 302406 360561 403208 480748 604812 655213 721122 961496 1209624 1310426 1442244 1562431 1965639 2620852 2884488 3124862 3931278 4687293 5241704 6249724 7862556 9374586 12499448 15725112 18749172 20311603 37498344 40623206 60934809 81246412 121869618 162492824 243739236 487478472