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992120806 = 21283386641
BaseRepresentation
bin111011001000101…
…000111111100110
32120010211221220001
4323020220333212
54012440331211
6242240331514
733404613325
oct7310507746
92503757801
10992120806
1146a032056
12238313b9a
1312a70ba41
1495a9a0bc
155c176ac1
hex3b228fe6

992120806 has 8 divisors (see below), whose sum is σ = 1489344984. Its totient is φ = 495672480.

The previous prime is 992120803. The next prime is 992120819. The reversal of 992120806 is 608021299.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992120803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190755 + ... + 195886.

It is an arithmetic number, because the mean of its divisors is an integer number (186168123).

Almost surely, 2992120806 is an apocalyptic number.

992120806 is a deficient number, since it is larger than the sum of its proper divisors (497224178).

992120806 is a wasteful number, since it uses less digits than its factorization.

992120806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387926.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 992120806 is about 31497.9492348311. The cubic root of 992120806 is about 997.3666736793.

The spelling of 992120806 in words is "nine hundred ninety-two million, one hundred twenty thousand, eight hundred six".

Divisors: 1 2 1283 2566 386641 773282 496060403 992120806