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83012756 = 2237560897
BaseRepresentation
bin1001111001010…
…10110010010100
312210012111002112
410330222302110
5132222402011
612123130152
72025411461
oct474526224
9183174075
1083012756
1142949792
1223973958
1314276798
14b04c668
15744b58b
hex4f2ac94

83012756 has 12 divisors (see below), whose sum is σ = 149198868. Its totient is φ = 40384512.

The previous prime is 83012707. The next prime is 83012771. The reversal of 83012756 is 65721038.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56490256 + 26522500 = 7516^2 + 5150^2 .

It is a super-2 number, since 2×830127562 = 13782235317431072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280301 + ... + 280596.

It is an arithmetic number, because the mean of its divisors is an integer number (12433239).

Almost surely, 283012756 is an apocalyptic number.

It is an amenable number.

83012756 is a deficient number, since it is larger than the sum of its proper divisors (66186112).

83012756 is a wasteful number, since it uses less digits than its factorization.

83012756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560938 (or 560936 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 83012756 is about 9111.1336286985. The cubic root of 83012756 is about 436.2294124159.

The spelling of 83012756 in words is "eighty-three million, twelve thousand, seven hundred fifty-six".

Divisors: 1 2 4 37 74 148 560897 1121794 2243588 20753189 41506378 83012756