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80283137 = 1126173149
BaseRepresentation
bin1001100100100…
…00011000000001
312121001210202112
410302100120001
5131023030022
611544425105
71663252424
oct462203001
9177053675
1080283137
1141354a00
1222a78195
131382c21c
14a93b9bb
1570ac8e2
hex4c90601

80283137 has 24 divisors (see below), whose sum is σ = 91530600. Its totient is φ = 70329600.

The previous prime is 80283109. The next prime is 80283139. The reversal of 80283137 is 73138208.

It can be written as a sum of positive squares in 4 ways, for example, as 698896 + 79584241 = 836^2 + 8921^2 .

It is not a de Polignac number, because 80283137 - 212 = 80279041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80283139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538739 + ... + 538887.

It is an arithmetic number, because the mean of its divisors is an integer number (3813775).

Almost surely, 280283137 is an apocalyptic number.

It is an amenable number.

80283137 is a deficient number, since it is larger than the sum of its proper divisors (11247463).

80283137 is a wasteful number, since it uses less digits than its factorization.

80283137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 80283137 is about 8960.0857696788. The cubic root of 80283137 is about 431.3946729617.

Subtracting from 80283137 its reverse (73138208), we obtain a square (7144929 = 26732).

The spelling of 80283137 in words is "eighty million, two hundred eighty-three thousand, one hundred thirty-seven".

Divisors: 1 11 61 73 121 149 671 803 1639 4453 7381 8833 9089 10877 18029 48983 99979 119647 538813 663497 1099769 1316117 7298467 80283137