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80317660 = 2254015883
BaseRepresentation
bin1001100100110…
…00110011011100
312121010120010011
410302120303130
5131030131120
611545253004
71663455163
oct462306334
9177116104
1080317660
1141378935
1222a94164
1313841b57
14a94a3da
1570b7c5a
hex4c98cdc

80317660 has 12 divisors (see below), whose sum is σ = 168667128. Its totient is φ = 32127056.

The previous prime is 80317637. The next prime is 80317667. The reversal of 80317660 is 6671308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80317667) 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, 2007922 + ... + 2007961.

It is an arithmetic number, because the mean of its divisors is an integer number (14055594).

Almost surely, 280317660 is an apocalyptic number.

It is an amenable number.

80317660 is an abundant number, since it is smaller than the sum of its proper divisors (88349468).

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

80317660 is a wasteful number, since it uses less digits than its factorization.

80317660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015892 (or 4015890 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 80317660 is about 8962.0120508734. The cubic root of 80317660 is about 431.4564995778.

Adding to 80317660 its reverse (6671308), we get a palindrome (86988968).

The spelling of 80317660 in words is "eighty million, three hundred seventeen thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 4015883 8031766 16063532 20079415 40158830 80317660