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80331888 = 24371353347
BaseRepresentation
bin1001100100111…
…00010001110000
312121011021122010
410302130101300
5131031110023
611545442520
71663544520
oct462342160
9177137563
1080331888
114138859a
1222aa0440
1313848480
14a951680
1570bc093
hex4c9c470

80331888 has 160 divisors (see below), whose sum is σ = 260983296. Its totient is φ = 20726784.

The previous prime is 80331887. The next prime is 80331949. The reversal of 80331888 is 88813308.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80331887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231331 + ... + 231677.

Almost surely, 280331888 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 80331888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130491648).

80331888 is an abundant number, since it is smaller than the sum of its proper divisors (180651408).

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

80331888 is a wasteful number, since it uses less digits than its factorization.

80331888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 80331888 is about 8962.8058106823. The cubic root of 80331888 is about 431.4819750901.

The spelling of 80331888 in words is "eighty million, three hundred thirty-one thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 39 42 48 52 53 56 78 84 91 104 106 112 156 159 168 182 208 212 273 312 318 336 347 364 371 424 546 624 636 689 694 728 742 848 1041 1092 1113 1272 1378 1388 1456 1484 2067 2082 2184 2226 2429 2544 2756 2776 2968 4134 4164 4368 4452 4511 4823 4858 5512 5552 5936 7287 8268 8328 8904 9022 9646 9716 11024 13533 14469 14574 16536 16656 17808 18044 18391 19292 19432 27066 28938 29148 31577 33072 36088 36782 38584 38864 54132 55173 57876 58296 63154 72176 73564 77168 94731 108264 110346 115752 116592 126308 128737 147128 189462 216528 220692 231504 239083 252616 257474 294256 378924 386211 441384 478166 505232 514948 717249 757848 772422 882768 956332 1029896 1434498 1515696 1544844 1673581 1912664 2059792 2868996 3089688 3347162 3825328 5020743 5737992 6179376 6694324 10041486 11475984 13388648 20082972 26777296 40165944 80331888