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80745893 = 239293779
BaseRepresentation
bin1001101000000…
…01010110100101
312121221022112122
410310001112211
5131132332033
612002355325
72000220524
oct464012645
9177838478
1080745893
1141640648
122305bb45
1313961a47
14aa1c4bb
15714ea98
hex4d015a5

80745893 has 8 divisors (see below), whose sum is σ = 84369600. Its totient is φ = 77131648.

The previous prime is 80745887. The next prime is 80745901. The reversal of 80745893 is 39854708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80745893 - 212 = 80741797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80745493) 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 7 ways as a sum of consecutive naturals, for example, 19478 + ... + 23256.

It is an arithmetic number, because the mean of its divisors is an integer number (10546200).

Almost surely, 280745893 is an apocalyptic number.

It is an amenable number.

80745893 is a deficient number, since it is larger than the sum of its proper divisors (3623707).

80745893 is a wasteful number, since it uses less digits than its factorization.

80745893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 80745893 is about 8985.8718553071. The cubic root of 80745893 is about 432.2219456381.

The spelling of 80745893 in words is "eighty million, seven hundred forty-five thousand, eight hundred ninety-three".

Divisors: 1 23 929 3779 21367 86917 3510691 80745893