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80008144 = 2424120749
BaseRepresentation
bin1001100010011…
…01001111010000
312120112211112121
410301031033100
5130440230034
611534504024
71661025616
oct461151720
9176484477
1080008144
1141187337
1222965014
1313763cc8
14a8a96b6
1570561b4
hex4c4d3d0

80008144 has 20 divisors (see below), whose sum is σ = 155666500. Its totient is φ = 39836160.

The previous prime is 80008141. The next prime is 80008151. The reversal of 80008144 is 44180008.

It can be written as a sum of positive squares in 2 ways, for example, as 26132544 + 53875600 = 5112^2 + 7340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80008141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6519 + ... + 14230.

It is an arithmetic number, because the mean of its divisors is an integer number (7783325).

Almost surely, 280008144 is an apocalyptic number.

It is an amenable number.

80008144 is a deficient number, since it is larger than the sum of its proper divisors (75658356).

80008144 is a wasteful number, since it uses less digits than its factorization.

80008144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20998 (or 20992 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 80008144 is about 8944.7271618535. The cubic root of 80008144 is about 430.9015589403.

The spelling of 80008144 in words is "eighty million, eight thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 241 482 964 1928 3856 20749 41498 82996 165992 331984 5000509 10001018 20002036 40004072 80008144