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80180316 = 22322227231
BaseRepresentation
bin1001100011101…
…11010001011100
312120212120201100
410301313101130
5131011232231
611542313100
71662343566
oct461672134
9176776640
1080180316
1141294727
1222a28790
13137c4498
14a912336
15708c1e6
hex4c7745c

80180316 has 18 divisors (see below), whose sum is σ = 202678112. Its totient is φ = 26726760.

The previous prime is 80180311. The next prime is 80180333. The reversal of 80180316 is 61308108.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 80180316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80180311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1113580 + ... + 1113651.

Almost surely, 280180316 is an apocalyptic number.

It is an amenable number.

80180316 is an abundant number, since it is smaller than the sum of its proper divisors (122497796).

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

80180316 is a wasteful number, since it uses less digits than its factorization.

80180316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227241 (or 2227236 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 80180316 is about 8954.3462072895. The cubic root of 80180316 is about 431.2104276228.

The spelling of 80180316 in words is "eighty million, one hundred eighty thousand, three hundred sixteen".

Divisors: 1 2 3 4 6 9 12 18 36 2227231 4454462 6681693 8908924 13363386 20045079 26726772 40090158 80180316