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80000050 = 25213123077
BaseRepresentation
bin1001100010010…
…11010000110010
312120112102102211
410301023100302
5130440000200
611534402334
71660663204
oct461132062
9176472384
1080000050
1141181249
12229603aa
1313760410
14a8a6774
157053aba
hex4c4b432

80000050 has 24 divisors (see below), whose sum is σ = 160247556. Its totient is φ = 29538240.

The previous prime is 80000027. The next prime is 80000059. The reversal of 80000050 is 5000008.

It can be written as a sum of positive squares in 6 ways, for example, as 12809241 + 67190809 = 3579^2 + 8197^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (80000059) 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 11 ways as a sum of consecutive naturals, for example, 60889 + ... + 62188.

Almost surely, 280000050 is an apocalyptic number.

80000050 is an abundant number, since it is smaller than the sum of its proper divisors (80247506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80000050 is a wasteful number, since it uses less digits than its factorization.

80000050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123102 (or 123097 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 80000050 is about 8944.2747050837. The cubic root of 80000050 is about 430.8870277745.

Adding to 80000050 its reverse (5000008), we get a palindrome (85000058).

The spelling of 80000050 in words is "eighty million, fifty", and thus it is an aban number and an uban number.

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 123077 246154 615385 1230770 1600001 3076925 3200002 6153850 8000005 16000010 40000025 80000050