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80831352 = 23372947353
BaseRepresentation
bin1001101000101…
…10001101111000
312122002122202210
410310112031320
5131143100402
612004255120
72001024630
oct464261570
9178078683
1080831352
1141699878
12230a14a0
1313991904
14aa416c0
15716a06c
hex4d16378

80831352 has 128 divisors (see below), whose sum is σ = 244684800. Its totient is φ = 21762048.

The previous prime is 80831329. The next prime is 80831369. The reversal of 80831352 is 25313808.

It is a happy number.

It is a super-2 number, since 2×808313522 = 13067414932295808, which contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 228808 + ... + 229160.

It is an arithmetic number, because the mean of its divisors is an integer number (1911600).

Almost surely, 280831352 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 80831352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122342400).

80831352 is an abundant number, since it is smaller than the sum of its proper divisors (163853448).

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

80831352 is a wasteful number, since it uses less digits than its factorization.

80831352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 80831352 is about 8990.6257846715. The cubic root of 80831352 is about 432.3743754003.

The spelling of 80831352 in words is "eighty million, eight hundred thirty-one thousand, three hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 29 42 47 56 58 84 87 94 116 141 168 174 188 203 232 282 329 348 353 376 406 564 609 658 696 706 812 987 1059 1128 1218 1316 1363 1412 1624 1974 2118 2436 2471 2632 2726 2824 3948 4089 4236 4872 4942 5452 7413 7896 8178 8472 9541 9884 10237 10904 14826 16356 16591 19082 19768 20474 28623 29652 30711 32712 33182 38164 40948 49773 57246 59304 61422 66364 71659 76328 81896 99546 114492 116137 122844 132728 143318 199092 214977 228984 232274 245688 286636 348411 398184 429954 464548 481139 573272 696822 859908 929096 962278 1393644 1443417 1719816 1924556 2787288 2886834 3367973 3849112 5773668 6735946 10103919 11547336 13471892 20207838 26943784 40415676 80831352