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80972006 = 2231760261
BaseRepresentation
bin1001101001110…
…00100011100110
312122100210201012
410310320203212
5131212101011
612011302222
72002151663
oct464704346
9178323635
1080972006
1141785515
122314a972
1313a1093b
14aa7aa6a
157196a8b
hex4d388e6

80972006 has 8 divisors (see below), whose sum is σ = 126738864. Its totient is φ = 38725720.

The previous prime is 80971993. The next prime is 80972027. The reversal of 80972006 is 60027908.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 880085 + ... + 880176.

It is an arithmetic number, because the mean of its divisors is an integer number (15842358).

Almost surely, 280972006 is an apocalyptic number.

80972006 is a deficient number, since it is larger than the sum of its proper divisors (45766858).

80972006 is a wasteful number, since it uses less digits than its factorization.

80972006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760286.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 80972006 is about 8998.4446433814. Note that the first 3 decimals coincide. The cubic root of 80972006 is about 432.6250204915.

The spelling of 80972006 in words is "eighty million, nine hundred seventy-two thousand, six".

Divisors: 1 2 23 46 1760261 3520522 40486003 80972006