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80203066 = 2195983431
BaseRepresentation
bin1001100011111…
…00110100111010
312120220201220221
410301330310322
5131012444231
611543010254
71662500116
oct461746472
9176821827
1080203066
11412aa829
1222a3998a
1313801948
14a91a746
157093d11
hex4c7cd3a

80203066 has 32 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 36811440.

The previous prime is 80203061. The next prime is 80203069. The reversal of 80203066 is 66030208.

It is a self number, because there is not a number n which added to its sum of digits gives 80203066.

It is not an unprimeable number, because it can be changed into a prime (80203061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185871 + ... + 186301.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 280203066 is an apocalyptic number.

80203066 is a deficient number, since it is larger than the sum of its proper divisors (50433734).

80203066 is a wasteful number, since it uses less digits than its factorization.

80203066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 80203066 is about 8955.6164500273. The cubic root of 80203066 is about 431.2512069980.

The spelling of 80203066 in words is "eighty million, two hundred three thousand, sixty-six".

Divisors: 1 2 19 38 59 83 118 166 431 862 1121 1577 2242 3154 4897 8189 9794 16378 25429 35773 50858 71546 93043 186086 483151 679687 966302 1359374 2110607 4221214 40101533 80203066