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68820850 = 25271979131
BaseRepresentation
bin1000001101000…
…01111101110010
311210111110110101
410012201331302
5120104231400
610455023014
71463652610
oct406417562
9153443411
1068820850
113593613a
121b06aa6a
1311347bc7
1491d66b0
15609656a
hex41a1f72

68820850 has 96 divisors (see below), whose sum is σ = 157132800. Its totient is φ = 21902400.

The previous prime is 68820833. The next prime is 68820877. The reversal of 68820850 is 5802886.

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 47 ways as a sum of consecutive naturals, for example, 525285 + ... + 525415.

It is an arithmetic number, because the mean of its divisors is an integer number (1636800).

Almost surely, 268820850 is an apocalyptic number.

68820850 is an abundant number, since it is smaller than the sum of its proper divisors (88311950).

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

68820850 is a wasteful number, since it uses less digits than its factorization.

68820850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 68820850 is about 8295.8332914783. The cubic root of 68820850 is about 409.8013116221.

The spelling of 68820850 in words is "sixty-eight million, eight hundred twenty thousand, eight hundred fifty".

Divisors: 1 2 5 7 10 14 19 25 35 38 50 70 79 95 131 133 158 175 190 262 266 350 395 475 553 655 665 790 917 950 1106 1310 1330 1501 1834 1975 2489 2765 3002 3275 3325 3950 4585 4978 5530 6550 6650 7505 9170 10349 10507 12445 13825 15010 17423 20698 21014 22925 24890 27650 34846 37525 45850 51745 52535 62225 72443 75050 87115 103490 105070 124450 144886 174230 196631 258725 262675 362215 393262 435575 517450 525350 724430 871150 983155 1376417 1811075 1966310 2752834 3622150 4915775 6882085 9831550 13764170 34410425 68820850