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80243297 = 233488839
BaseRepresentation
bin1001100100001…
…10101001100001
312120222210002222
410302012221201
5131020241142
611543520425
71663025321
oct462065141
9176883088
1080243297
1141327a82
1222a59115
1313817054
14a92b281
1570a0bd2
hex4c86a61

80243297 has 4 divisors (see below), whose sum is σ = 83732160. Its totient is φ = 76754436.

The previous prime is 80243291. The next prime is 80243311. The reversal of 80243297 is 79234208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80243297 - 28 = 80243041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80243291) 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 in 3 ways as a sum of consecutive naturals, for example, 1744397 + ... + 1744442.

It is an arithmetic number, because the mean of its divisors is an integer number (20933040).

Almost surely, 280243297 is an apocalyptic number.

It is an amenable number.

80243297 is a deficient number, since it is larger than the sum of its proper divisors (3488863).

80243297 is a wasteful number, since it uses less digits than its factorization.

80243297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3488862.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 80243297 is about 8957.8623007948. The cubic root of 80243297 is about 431.3233021935.

The spelling of 80243297 in words is "eighty million, two hundred forty-three thousand, two hundred ninety-seven".

Divisors: 1 23 3488839 80243297