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80928593 = 419193147
BaseRepresentation
bin1001101001011…
…01111101010001
312122021121011022
410310231331101
5131204203333
612010325225
72001611264
oct464557521
9178247138
1080928593
1141755939
1223129815
13139c6c55
14aa68cdb
157188c98
hex4d2df51

80928593 has 4 divisors (see below), whose sum is σ = 81122160. Its totient is φ = 80735028.

The previous prime is 80928553. The next prime is 80928611. The reversal of 80928593 is 39582908.

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 80928593 - 210 = 80927569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80928553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96155 + ... + 96992.

It is an arithmetic number, because the mean of its divisors is an integer number (20280540).

Almost surely, 280928593 is an apocalyptic number.

It is an amenable number.

80928593 is a deficient number, since it is larger than the sum of its proper divisors (193567).

80928593 is a wasteful number, since it uses less digits than its factorization.

80928593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193566.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 80928593 is about 8996.0320697516. The cubic root of 80928593 is about 432.5476896192.

The spelling of 80928593 in words is "eighty million, nine hundred twenty-eight thousand, five hundred ninety-three".

Divisors: 1 419 193147 80928593