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80044705 = 5131231457
BaseRepresentation
bin1001100010101…
…10001010100001
312120121200200201
410301112022201
5130442412310
611535345201
71661240326
oct461261241
9176550621
1080044705
1141201854
1222982201
1313777840
14a8b8b4d
157061e3a
hex4c562a1

80044705 has 8 divisors (see below), whose sum is σ = 103442472. Its totient is φ = 59109888.

The previous prime is 80044693. The next prime is 80044709. The reversal of 80044705 is 50744008.

It can be written as a sum of positive squares in 4 ways, for example, as 2903616 + 77141089 = 1704^2 + 8783^2 .

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 80044705 - 25 = 80044673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80044709) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 615664 + ... + 615793.

It is an arithmetic number, because the mean of its divisors is an integer number (12930309).

Almost surely, 280044705 is an apocalyptic number.

It is an amenable number.

80044705 is a deficient number, since it is larger than the sum of its proper divisors (23397767).

80044705 is a wasteful number, since it uses less digits than its factorization.

80044705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231475.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 80044705 is about 8946.7706464400. The cubic root of 80044705 is about 430.9671847296.

The spelling of 80044705 in words is "eighty million, forty-four thousand, seven hundred five".

Divisors: 1 5 13 65 1231457 6157285 16008941 80044705