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80686030 = 2549116433
BaseRepresentation
bin1001100111100…
…10101111001110
312121211021102111
410303302233032
5131123423110
612001214234
71666551145
oct463625716
9177737374
1080686030
11415aa677
122303137a
1313940719
14aa0475c
15713be8a
hex4cf2bce

80686030 has 16 divisors (see below), whose sum is σ = 145539504. Its totient is φ = 32206720.

The previous prime is 80686019. The next prime is 80686037. The reversal of 80686030 is 3068608.

It is a junction number, because it is equal to n+sod(n) for n = 80685983 and 80686001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80686037) 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, 3307 + ... + 13126.

It is an arithmetic number, because the mean of its divisors is an integer number (9096219).

Almost surely, 280686030 is an apocalyptic number.

80686030 is a deficient number, since it is larger than the sum of its proper divisors (64853474).

80686030 is a wasteful number, since it uses less digits than its factorization.

80686030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16931.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80686030 is about 8982.5402865782. The cubic root of 80686030 is about 432.1151063585.

The spelling of 80686030 in words is "eighty million, six hundred eighty-six thousand, thirty".

Divisors: 1 2 5 10 491 982 2455 4910 16433 32866 82165 164330 8068603 16137206 40343015 80686030