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80622985 = 5197111953
BaseRepresentation
bin1001100111000…
…11010110001001
312121201001221111
410303203112021
5131114413420
612000010321
71666166302
oct463432611
9177631844
1080622985
1141567273
12230009a1
131391ab11
14a9c97a9
15712845a
hex4ce3589

80622985 has 16 divisors (see below), whose sum is σ = 103282560. Its totient is φ = 60238080.

The previous prime is 80622967. The next prime is 80622989. The reversal of 80622985 is 58922608.

It is not a de Polignac number, because 80622985 - 29 = 80622473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80622989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (6455160).

Almost surely, 280622985 is an apocalyptic number.

It is an amenable number.

80622985 is a deficient number, since it is larger than the sum of its proper divisors (22659575).

80622985 is a wasteful number, since it uses less digits than its factorization.

80622985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12048.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 80622985 is about 8979.0302928546. The cubic root of 80622985 is about 432.0025309208.

The spelling of 80622985 in words is "eighty million, six hundred twenty-two thousand, nine hundred eighty-five".

Divisors: 1 5 19 71 95 355 1349 6745 11953 59765 227107 848663 1135535 4243315 16124597 80622985