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80428052 = 2261332801
BaseRepresentation
bin1001100101100…
…11110000010100
312121100011112202
410302303300110
5131042144202
611551504032
71664425055
oct462636024
9177304482
1080428052
1141443871
1222b28018
1313880183
14a97872c
1570da802
hex4cb3c14

80428052 has 12 divisors (see below), whose sum is σ = 140982996. Its totient is φ = 40147200.

The previous prime is 80428027. The next prime is 80428057. The reversal of 80428052 is 25082408.

It can be written as a sum of positive squares in 2 ways, for example, as 4145296 + 76282756 = 2036^2 + 8734^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80428057) 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, 13949 + ... + 18852.

It is an arithmetic number, because the mean of its divisors is an integer number (11748583).

Almost surely, 280428052 is an apocalyptic number.

It is an amenable number.

80428052 is a deficient number, since it is larger than the sum of its proper divisors (60554944).

80428052 is a wasteful number, since it uses less digits than its factorization.

80428052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33418 (or 33416 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 80428052 is about 8968.1688208909. The cubic root of 80428052 is about 431.6540797915.

The spelling of 80428052 in words is "eighty million, four hundred twenty-eight thousand, fifty-two".

Divisors: 1 2 4 613 1226 2452 32801 65602 131204 20107013 40214026 80428052