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80725968 = 2432560597
BaseRepresentation
bin1001100111111…
…00011111010000
312121220022012200
410303330133100
5131131212333
612002123200
72000105451
oct463743720
9177808180
1080725968
1141627684
1223050500
131395595b
14aa15128
157148c13
hex4cfc7d0

80725968 has 30 divisors (see below), whose sum is σ = 225920994. Its totient is φ = 26908608.

The previous prime is 80725949. The next prime is 80725969. The reversal of 80725968 is 86952708.

It can be written as a sum of positive squares in only one way, i.e., 69355584 + 11370384 = 8328^2 + 3372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80725969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280155 + ... + 280442.

Almost surely, 280725968 is an apocalyptic number.

It is an amenable number.

80725968 is an abundant number, since it is smaller than the sum of its proper divisors (145195026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80725968 is a wasteful number, since it uses less digits than its factorization.

80725968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560611 (or 560602 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 80725968 is about 8984.7631020523. The cubic root of 80725968 is about 432.1863907617.

The spelling of 80725968 in words is "eighty million, seven hundred twenty-five thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 560597 1121194 1681791 2242388 3363582 4484776 5045373 6727164 8969552 10090746 13454328 20181492 26908656 40362984 80725968