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990195767 = 11531698449
BaseRepresentation
bin111011000001010…
…011000000110111
32120000020011020022
4323001103000313
54011442231032
6242131155355
733352345061
oct7301230067
92500204208
10990195767
11468a37810
12237745b5b
1312a1b6772
1495718731
155bde6512
hex3b053037

990195767 has 8 divisors (see below), whose sum is σ = 1100595600. Its totient is φ = 883192960.

The previous prime is 990195763. The next prime is 990195779. The reversal of 990195767 is 767591099.

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

It is a cyclic number.

It is not a de Polignac number, because 990195767 - 22 = 990195763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990195763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 848642 + ... + 849807.

It is an arithmetic number, because the mean of its divisors is an integer number (137574450).

Almost surely, 2990195767 is an apocalyptic number.

990195767 is a deficient number, since it is larger than the sum of its proper divisors (110399833).

990195767 is a wasteful number, since it uses less digits than its factorization.

990195767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698513.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The square root of 990195767 is about 31467.3762331720. The cubic root of 990195767 is about 996.7211834451.

The spelling of 990195767 in words is "nine hundred ninety million, one hundred ninety-five thousand, seven hundred sixty-seven".

Divisors: 1 11 53 583 1698449 18682939 90017797 990195767