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80272144 = 2431161839
BaseRepresentation
bin1001100100011…
…01101100010000
312121001020200101
410302031230100
5131022202034
611544302144
71663205401
oct462155420
9177036611
1080272144
1141347717
1222a71954
1313827214
14a9379a8
1570a9514
hex4c8db10

80272144 has 20 divisors (see below), whose sum is σ = 160545280. Its totient is φ = 38841120.

The previous prime is 80272133. The next prime is 80272183. The reversal of 80272144 is 44127208.

80272144 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80424 + ... + 81415.

It is an arithmetic number, because the mean of its divisors is an integer number (8027264).

Almost surely, 280272144 is an apocalyptic number.

It is an amenable number.

80272144 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80272144 is a wasteful number, since it uses less digits than its factorization.

80272144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161878 (or 161872 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 80272144 is about 8959.4723058894. The cubic root of 80272144 is about 431.3749820765.

The spelling of 80272144 in words is "eighty million, two hundred seventy-two thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 31 62 124 248 496 161839 323678 647356 1294712 2589424 5017009 10034018 20068036 40136072 80272144