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84672512 = 2181719
BaseRepresentation
bin1010000110000…
…00000000000000
312220022210211222
411003000000000
5133134010022
612222454212
72045463431
oct503000000
9186283758
1084672512
1143882791
1224434368
13147080a2
14b361488
157678242
hex50c0000

84672512 has 76 divisors (see below), whose sum is σ = 188743320. Its totient is φ = 37748736.

The previous prime is 84672487. The next prime is 84672527. The reversal of 84672512 is 21527648.

It is a tau number, because it is divible by the number of its divisors (76).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4456439 + ... + 4456457.

Almost surely, 284672512 is an apocalyptic number.

84672512 is a droll number since its even prime factors and its odd prime factors have the same sum.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84672512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94371660).

84672512 is an abundant number, since it is smaller than the sum of its proper divisors (104070808).

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

84672512 is an frugal number, since it uses more digits than its factorization.

84672512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 38 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 84672512 is about 9201.7667868731. The cubic root of 84672512 is about 439.1175702938.

It can be divided in two parts, 84672 and 512, that added together give a cube (85184 = 443).

The spelling of 84672512 in words is "eighty-four million, six hundred seventy-two thousand, five hundred twelve".

Divisors: 1 2 4 8 16 17 19 32 34 38 64 68 76 128 136 152 256 272 304 323 512 544 608 646 1024 1088 1216 1292 2048 2176 2432 2584 4096 4352 4864 5168 8192 8704 9728 10336 16384 17408 19456 20672 32768 34816 38912 41344 65536 69632 77824 82688 131072 139264 155648 165376 262144 278528 311296 330752 557056 622592 661504 1114112 1245184 1323008 2228224 2490368 2646016 4456448 4980736 5292032 10584064 21168128 42336256 84672512