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83026680 = 233511312029
BaseRepresentation
bin1001111001011…
…10001011111000
312210020012012020
410330232023320
5132223323210
612123314440
72025500202
oct474561370
9183205166
1083026680
11429591a0
122397ba20
131427cc19
14b053772
157450770
hex4f2e2f8

83026680 has 128 divisors (see below), whose sum is σ = 280627200. Its totient is φ = 19468800.

The previous prime is 83026667. The next prime is 83026687. The reversal of 83026680 is 8662038.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83026687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39906 + ... + 41934.

It is an arithmetic number, because the mean of its divisors is an integer number (2192400).

Almost surely, 283026680 is an apocalyptic number.

83026680 is the 7440-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83026680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140313600).

83026680 is an abundant number, since it is smaller than the sum of its proper divisors (197600520).

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

83026680 is a wasteful number, since it uses less digits than its factorization.

83026680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 83026680 is about 9111.8977167218. The cubic root of 83026680 is about 436.2538011125.

The spelling of 83026680 in words is "eighty-three million, twenty-six thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 11 12 15 20 22 24 30 31 33 40 44 55 60 62 66 88 93 110 120 124 132 155 165 186 220 248 264 310 330 341 372 440 465 620 660 682 744 930 1023 1240 1320 1364 1705 1860 2029 2046 2728 3410 3720 4058 4092 5115 6087 6820 8116 8184 10145 10230 12174 13640 16232 20290 20460 22319 24348 30435 40580 40920 44638 48696 60870 62899 66957 81160 89276 111595 121740 125798 133914 178552 188697 223190 243480 251596 267828 314495 334785 377394 446380 503192 535656 628990 669570 691889 754788 892760 943485 1257980 1339140 1383778 1509576 1886970 2075667 2515960 2678280 2767556 3459445 3773940 4151334 5535112 6918890 7547880 8302668 10378335 13837780 16605336 20756670 27675560 41513340 83026680