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80320682 = 21317181721
BaseRepresentation
bin1001100100110…
…01100010101010
312121010201021002
410302121202222
5131030230212
611545315002
71663500041
oct462314252
9177121232
1080320682
1141380132
1222a95a62
1313843340
14a94b558
1570b8ac2
hex4c998aa

80320682 has 16 divisors (see below), whose sum is σ = 137381832. Its totient is φ = 34890240.

The previous prime is 80320679. The next prime is 80320687. The reversal of 80320682 is 28602308.

It can be written as a sum of positive squares in 4 ways, for example, as 52113961 + 28206721 = 7219^2 + 5311^2 .

It is not an unprimeable number, because it can be changed into a prime (80320687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90419 + ... + 91302.

Almost surely, 280320682 is an apocalyptic number.

80320682 is a deficient number, since it is larger than the sum of its proper divisors (57061150).

80320682 is a wasteful number, since it uses less digits than its factorization.

80320682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181753.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 80320682 is about 8962.1806498196. The cubic root of 80320682 is about 431.4619107795.

The spelling of 80320682 in words is "eighty million, three hundred twenty thousand, six hundred eighty-two".

Divisors: 1 2 13 17 26 34 221 442 181721 363442 2362373 3089257 4724746 6178514 40160341 80320682