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80137593 = 34989353
BaseRepresentation
bin1001100011011…
…00110101111001
312120210102010000
410301230311321
5131003400333
611541343213
71662105204
oct461546571
9176712100
1080137593
1141265618
1222a07b09
13137aabc3
14a90093b
15707e713
hex4c6cd79

80137593 has 10 divisors (see below), whose sum is σ = 119711834. Its totient is φ = 53425008.

The previous prime is 80137571. The next prime is 80137621. The reversal of 80137593 is 39573108.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 12766329 = 8208^2 + 3573^2 .

It is not a de Polignac number, because 80137593 - 26 = 80137529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80137093) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 494596 + ... + 494757.

Almost surely, 280137593 is an apocalyptic number.

It is an amenable number.

80137593 is a deficient number, since it is larger than the sum of its proper divisors (39574241).

80137593 is an equidigital number, since it uses as much as digits as its factorization.

80137593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989365 (or 989356 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 80137593 is about 8951.9602881157. The cubic root of 80137593 is about 431.1338257956.

The spelling of 80137593 in words is "eighty million, one hundred thirty-seven thousand, five hundred ninety-three".

Divisors: 1 3 9 27 81 989353 2968059 8904177 26712531 80137593