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87146496 = 21433197
BaseRepresentation
bin1010011000111…
…00000000000000
320001222111112000
411030130000000
5134302141441
612351504000
72105506263
oct514340000
9201874460
1087146496
11452124a8
1225228000
1315093198
14b806cda
1579b62b6
hex531c000

87146496 has 120 divisors (see below), whose sum is σ = 259514640. Its totient is φ = 28901376.

The previous prime is 87146489. The next prime is 87146497. The reversal of 87146496 is 69464178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87146497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442270 + ... + 442466.

It is an arithmetic number, because the mean of its divisors is an integer number (2162622).

Almost surely, 287146496 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 87146496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129757320).

87146496 is an abundant number, since it is smaller than the sum of its proper divisors (172368144).

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

87146496 is an equidigital number, since it uses as much as digits as its factorization.

87146496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 202 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 87146496 is about 9335.2287599180. The cubic root of 87146496 is about 443.3533318031.

The spelling of 87146496 in words is "eighty-seven million, one hundred forty-six thousand, four hundred ninety-six".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 197 216 256 288 384 394 432 512 576 591 768 788 864 1024 1152 1182 1536 1576 1728 1773 2048 2304 2364 3072 3152 3456 3546 4096 4608 4728 5319 6144 6304 6912 7092 8192 9216 9456 10638 12288 12608 13824 14184 16384 18432 18912 21276 24576 25216 27648 28368 36864 37824 42552 49152 50432 55296 56736 73728 75648 85104 100864 110592 113472 147456 151296 170208 201728 221184 226944 302592 340416 403456 442368 453888 605184 680832 806912 907776 1210368 1361664 1613824 1815552 2420736 2723328 3227648 3631104 4841472 5446656 7262208 9682944 10893312 14524416 21786624 29048832 43573248 87146496