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80879368 = 2310109921
BaseRepresentation
bin1001101001000…
…01111100001000
312122012002122011
410310201330020
5131201114433
612005305304
72001314623
oct464417410
9178162564
1080879368
1141721959
1223105234
13139aa71b
14aa54dba
1571793cd
hex4d21f08

80879368 has 8 divisors (see below), whose sum is σ = 151648830. Its totient is φ = 40439680.

The previous prime is 80879363. The next prime is 80879377. The reversal of 80879368 is 86397808.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 77123524 + 3755844 = 8782^2 + 1938^2 .

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

It is not an unprimeable number, because it can be changed into a prime (80879363) by changing a digit.

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, 5054953 + ... + 5054968.

Almost surely, 280879368 is an apocalyptic number.

It is an amenable number.

80879368 is a deficient number, since it is larger than the sum of its proper divisors (70769462).

80879368 is a wasteful number, since it uses less digits than its factorization.

80879368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109927 (or 10109923 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 80879368 is about 8993.2957251499. The cubic root of 80879368 is about 432.4599724614.

The spelling of 80879368 in words is "eighty million, eight hundred seventy-nine thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 10109921 20219842 40439684 80879368