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80308719 = 332974397
BaseRepresentation
bin1001100100101…
…10100111101111
312121010002212000
410302112213233
5131024334334
611545143343
71663420131
oct462264757
9177102760
1080308719
1141372147
1222a8ab53
131383aa6a
14a947051
1570b5299
hex4c969ef

80308719 has 8 divisors (see below), whose sum is σ = 118975920. Its totient is φ = 53539128.

The previous prime is 80308717. The next prime is 80308721. The reversal of 80308719 is 91780308.

It is an interprime number because it is at equal distance from previous prime (80308717) and next prime (80308721).

It is not a de Polignac number, because 80308719 - 21 = 80308717 is a prime.

It is a super-2 number, since 2×803087192 = 12898980694841922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80308717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487172 + ... + 1487225.

It is an arithmetic number, because the mean of its divisors is an integer number (14871990).

Almost surely, 280308719 is an apocalyptic number.

80308719 is a deficient number, since it is larger than the sum of its proper divisors (38667201).

80308719 is a wasteful number, since it uses less digits than its factorization.

80308719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974406 (or 2974400 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 80308719 is about 8961.5132092744. The cubic root of 80308719 is about 431.4404890029.

The spelling of 80308719 in words is "eighty million, three hundred eight thousand, seven hundred nineteen".

Divisors: 1 3 9 27 2974397 8923191 26769573 80308719