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83153408 = 29132312
BaseRepresentation
bin1001111010011…
…01001000000000
312210110122000212
410331031020000
5132241402113
612130133252
72026535522
oct475151000
9183418025
1083153408
1142a35428
1223a21228
13142c5800
14b087a12
1574780a8
hex4f4d200

83153408 has 90 divisors (see below), whose sum is σ = 185898537. Its totient is φ = 37140480.

The previous prime is 83153363. The next prime is 83153417. The reversal of 83153408 is 80435138.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 71098624 + 12054784 = 8432^2 + 3472^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=6448.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2682353 + ... + 2682383.

Almost surely, 283153408 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 83153408

83153408 is an abundant number, since it is smaller than the sum of its proper divisors (102745129).

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

83153408 is an equidigital number, since it uses as much as digits as its factorization.

83153408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 83153408 is about 9118.8490501817. The cubic root of 83153408 is about 436.4756473395.

Multiplying 83153408 by its sum of digits (32), we get a square (2660909056 = 515842).

83153408 divided by its sum of digits (32) gives a square (2598544 = 16122).

The spelling of 83153408 in words is "eighty-three million, one hundred fifty-three thousand, four hundred eight".

Divisors: 1 2 4 8 13 16 26 31 32 52 62 64 104 124 128 169 208 248 256 338 403 416 496 512 676 806 832 961 992 1352 1612 1664 1922 1984 2704 3224 3328 3844 3968 5239 5408 6448 6656 7688 7936 10478 10816 12493 12896 15376 15872 20956 21632 24986 25792 30752 41912 43264 49972 51584 61504 83824 86528 99944 103168 123008 162409 167648 199888 206336 246016 324818 335296 399776 492032 649636 670592 799552 1299272 1341184 1599104 2598544 2682368 3198208 5197088 6396416 10394176 20788352 41576704 83153408