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80043397 = 7472231091
BaseRepresentation
bin1001100010101…
…01110110000101
312120121121220021
410301111312011
5130442342042
611535335141
71661233450
oct461256605
9176547807
1080043397
1141200875
12229814b1
1313777075
14a8b8497
157061867
hex4c55d85

80043397 has 16 divisors (see below), whose sum is σ = 93929472. Its totient is φ = 66786480.

The previous prime is 80043391. The next prime is 80043433. The reversal of 80043397 is 79334008.

It is a cyclic number.

It is not a de Polignac number, because 80043397 - 23 = 80043389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80043391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72822 + ... + 73912.

It is an arithmetic number, because the mean of its divisors is an integer number (5870592).

Almost surely, 280043397 is an apocalyptic number.

It is an amenable number.

80043397 is a deficient number, since it is larger than the sum of its proper divisors (13886075).

80043397 is a wasteful number, since it uses less digits than its factorization.

80043397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 80043397 is about 8946.6975471400. The cubic root of 80043397 is about 430.9648372575.

The spelling of 80043397 in words is "eighty million, forty-three thousand, three hundred ninety-seven".

Divisors: 1 7 47 223 329 1091 1561 7637 10481 51277 73367 243293 358939 1703051 11434771 80043397