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80308636 = 22107187637
BaseRepresentation
bin1001100100101…
…10100110011100
312121010002201221
410302112212130
5131024334021
611545143124
71663416652
oct462264634
9177102657
1080308636
1141372081
1222a8aaa4
131383aa05
14a946dd2
1570b5241
hex4c9699c

80308636 has 12 divisors (see below), whose sum is σ = 141854328. Its totient is φ = 39778832.

The previous prime is 80308607. The next prime is 80308637. The reversal of 80308636 is 63680308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80308637) 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 3 ways as a sum of consecutive naturals, for example, 93391 + ... + 94246.

It is an arithmetic number, because the mean of its divisors is an integer number (11821194).

Almost surely, 280308636 is an apocalyptic number.

It is an amenable number.

80308636 is a deficient number, since it is larger than the sum of its proper divisors (61545692).

80308636 is a wasteful number, since it uses less digits than its factorization.

80308636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187748 (or 187746 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 80308636 is about 8961.5085783589. The cubic root of 80308636 is about 431.4403403699.

The spelling of 80308636 in words is "eighty million, three hundred eight thousand, six hundred thirty-six".

Divisors: 1 2 4 107 214 428 187637 375274 750548 20077159 40154318 80308636