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80380554 = 2361219619
BaseRepresentation
bin1001100101010…
…00001010001010
312121020202101120
410302220022022
5131034134204
611550500110
71664136432
oct462501212
9177222346
1080380554
1141411111
1222b04636
1313864677
14a9652c2
1570cb6d9
hex4ca828a

80380554 has 16 divisors (see below), whose sum is σ = 163397280. Its totient is φ = 26354160.

The previous prime is 80380549. The next prime is 80380567. The reversal of 80380554 is 45508308.

It is a happy number.

It is a super-2 number, since 2×803805542 = 12922066922693832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109444 + ... + 110175.

It is an arithmetic number, because the mean of its divisors is an integer number (10212330).

Almost surely, 280380554 is an apocalyptic number.

80380554 is an abundant number, since it is smaller than the sum of its proper divisors (83016726).

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

80380554 is a wasteful number, since it uses less digits than its factorization.

80380554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219685.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 80380554 is about 8965.5202860738. The cubic root of 80380554 is about 431.5690897813.

The spelling of 80380554 in words is "eighty million, three hundred eighty thousand, five hundred fifty-four".

Divisors: 1 2 3 6 61 122 183 366 219619 439238 658857 1317714 13396759 26793518 40190277 80380554