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80970197 = 7211150223
BaseRepresentation
bin1001101001110…
…00000111010101
312122100201020012
410310320013111
5131212021242
612011250005
72002143500
oct464700725
9178321205
1080970197
1141784120
1223149905
1313a0cb79
14aa7a137
157196282
hex4d381d5

80970197 has 12 divisors (see below), whose sum is σ = 102753216. Its totient is φ = 63093240.

The previous prime is 80970187. The next prime is 80970221. The reversal of 80970197 is 79107908.

It is not a de Polignac number, because 80970197 - 210 = 80969173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80970107) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 74573 + ... + 75650.

It is an arithmetic number, because the mean of its divisors is an integer number (8562768).

Almost surely, 280970197 is an apocalyptic number.

It is an amenable number.

80970197 is a deficient number, since it is larger than the sum of its proper divisors (21783019).

80970197 is a wasteful number, since it uses less digits than its factorization.

80970197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150248 (or 150241 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 80970197 is about 8998.3441254489. The cubic root of 80970197 is about 432.6217987012.

The spelling of 80970197 in words is "eighty million, nine hundred seventy thousand, one hundred ninety-seven".

Divisors: 1 7 11 49 77 539 150223 1051561 1652453 7360927 11567171 80970197