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80967213 = 328996357
BaseRepresentation
bin1001101001101…
…11011000101101
312122100120010200
410310313120231
5131211422323
612011224113
72002132005
oct464673055
9178316120
1080967213
1141781958
1223148039
1313a0b6c2
14aa79005
157195443
hex4d3762d

80967213 has 6 divisors (see below), whose sum is σ = 116952654. Its totient is φ = 53978136.

The previous prime is 80967181. The next prime is 80967233. The reversal of 80967213 is 31276908.

It can be written as a sum of positive squares in only one way, i.e., 77211369 + 3755844 = 8787^2 + 1938^2 .

It is not a de Polignac number, because 80967213 - 25 = 80967181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80967233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4498170 + ... + 4498187.

It is an arithmetic number, because the mean of its divisors is an integer number (19492109).

Almost surely, 280967213 is an apocalyptic number.

It is an amenable number.

80967213 is a deficient number, since it is larger than the sum of its proper divisors (35985441).

80967213 is a wasteful number, since it uses less digits than its factorization.

80967213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8996363 (or 8996360 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 80967213 is about 8998.1783156370. The cubic root of 80967213 is about 432.6164841560.

The spelling of 80967213 in words is "eighty million, nine hundred sixty-seven thousand, two hundred thirteen".

Divisors: 1 3 9 8996357 26989071 80967213