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80528033 = 127634079
BaseRepresentation
bin1001100110011…
…00001010100001
312121112020200202
410303030022201
5131103344113
611553554545
71665322415
oct463141241
9177466622
1080528033
11415019a3
1222b75a55
13138b6831
14a9a2d45
15710a258
hex4ccc2a1

80528033 has 4 divisors (see below), whose sum is σ = 81162240. Its totient is φ = 79893828.

The previous prime is 80528027. The next prime is 80528047. The reversal of 80528033 is 33082508.

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 80528033 - 24 = 80528017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80527987 and 80528005.

It is not an unprimeable number, because it can be changed into a prime (80528933) 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, 316913 + ... + 317166.

It is an arithmetic number, because the mean of its divisors is an integer number (20290560).

Almost surely, 280528033 is an apocalyptic number.

It is an amenable number.

80528033 is a deficient number, since it is larger than the sum of its proper divisors (634207).

80528033 is a wasteful number, since it uses less digits than its factorization.

80528033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634206.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 80528033 is about 8973.7413044950. The cubic root of 80528033 is about 431.8328703782.

The spelling of 80528033 in words is "eighty million, five hundred twenty-eight thousand, thirty-three".

Divisors: 1 127 634079 80528033