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80008745 = 521137573
BaseRepresentation
bin1001100010011…
…01011000101001
312120112212100212
410301031120221
5130440234440
611534510505
71661030435
oct461153051
9176485325
1080008745
1141187833
1222965435
131376436b
14a8a99c5
157056465
hex4c4d629

80008745 has 8 divisors (see below), whose sum is σ = 96068616. Its totient is φ = 63968256.

The previous prime is 80008741. The next prime is 80008769. The reversal of 80008745 is 54780008.

It can be written as a sum of positive squares in 4 ways, for example, as 7639696 + 72369049 = 2764^2 + 8507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80008745 - 22 = 80008741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80008741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6779 + ... + 14351.

It is an arithmetic number, because the mean of its divisors is an integer number (12008577).

Almost surely, 280008745 is an apocalyptic number.

It is an amenable number.

80008745 is a deficient number, since it is larger than the sum of its proper divisors (16059871).

80008745 is a wasteful number, since it uses less digits than its factorization.

80008745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9691.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 80008745 is about 8944.7607570018. The cubic root of 80008745 is about 430.9026378771.

The spelling of 80008745 in words is "eighty million, eight thousand, seven hundred forty-five".

Divisors: 1 5 2113 7573 10565 37865 16001749 80008745