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80310808 = 2310038851
BaseRepresentation
bin1001100100101…
…11001000011000
312121010012201101
410302113020120
5131024421213
611545201144
71663426204
oct462271030
9177105641
1080310808
1141373776
1222a901b4
131383b9b6
14a947b04
1570b5bdd
hex4c97218

80310808 has 8 divisors (see below), whose sum is σ = 150582780. Its totient is φ = 40155400.

The previous prime is 80310787. The next prime is 80310817. The reversal of 80310808 is 80801308.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×803108082 = 12899651763225728, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5019418 + ... + 5019433.

Almost surely, 280310808 is an apocalyptic number.

It is an amenable number.

80310808 is a deficient number, since it is larger than the sum of its proper divisors (70271972).

80310808 is a wasteful number, since it uses less digits than its factorization.

80310808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038857 (or 10038853 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 80310808 is about 8961.6297624930. The cubic root of 80310808 is about 431.4442298643. Note that the first 3 decimals are identical.

It can be divided in two parts, 80310 and 808, that added together give a palindrome (81118).

The spelling of 80310808 in words is "eighty million, three hundred ten thousand, eight hundred eight".

Divisors: 1 2 4 8 10038851 20077702 40155404 80310808