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80580072 = 23317918757
BaseRepresentation
bin1001100110110…
…00110111101000
312121121220002010
410303120313220
5131112030242
611555035520
71665630216
oct463306750
9177556063
1080580072
1141538001
1222b9bba0
1313904421
14a9b7cb6
15711a89c
hex4cd8de8

80580072 has 32 divisors (see below), whose sum is σ = 202586400. Its totient is φ = 26708544.

The previous prime is 80580013. The next prime is 80580127. The reversal of 80580072 is 27008508.

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, 5083 + ... + 13674.

It is an arithmetic number, because the mean of its divisors is an integer number (6330825).

Almost surely, 280580072 is an apocalyptic number.

It is an amenable number.

80580072 is an abundant number, since it is smaller than the sum of its proper divisors (122006328).

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

80580072 is a wasteful number, since it uses less digits than its factorization.

80580072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18945 (or 18941 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 80580072 is about 8976.6403514901. The cubic root of 80580072 is about 431.9258703393.

The spelling of 80580072 in words is "eighty million, five hundred eighty thousand, seventy-two".

Divisors: 1 2 3 4 6 8 12 24 179 358 537 716 1074 1432 2148 4296 18757 37514 56271 75028 112542 150056 225084 450168 3357503 6715006 10072509 13430012 20145018 26860024 40290036 80580072