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80227290 = 235111318701
BaseRepresentation
bin1001100100000…
…10101111011010
312120221222011010
410302002233122
5131014233130
611543314350
71662630543
oct462025732
9176858133
1080227290
1141316a50
1222a4b9b6
131380c990
14a9254ca
15709b0b0
hex4c82bda

80227290 has 64 divisors (see below), whose sum is σ = 226219392. Its totient is φ = 17952000.

The previous prime is 80227249. The next prime is 80227307. The reversal of 80227290 is 9272208.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 5061 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (3534678).

Almost surely, 280227290 is an apocalyptic number.

80227290 is an abundant number, since it is smaller than the sum of its proper divisors (145992102).

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

80227290 is a wasteful number, since it uses less digits than its factorization.

80227290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18735.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 80227290 is about 8956.9687953012. The cubic root of 80227290 is about 431.2946200418.

Adding to 80227290 its reverse (9272208), we get a palindrome (89499498).

The spelling of 80227290 in words is "eighty million, two hundred twenty-seven thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 11 13 15 22 26 30 33 39 55 65 66 78 110 130 143 165 195 286 330 390 429 715 858 1430 2145 4290 18701 37402 56103 93505 112206 187010 205711 243113 280515 411422 486226 561030 617133 729339 1028555 1215565 1234266 1458678 2057110 2431130 2674243 3085665 3646695 5348486 6171330 7293390 8022729 13371215 16045458 26742430 40113645 80227290