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80992 = 252531
BaseRepresentation
bin10011110001100000
311010002201
4103301200
510042432
61422544
7455062
oct236140
9133081
1080992
115593a
123aa54
132ab32
1421732
1518ee7
hex13c60

80992 has 12 divisors (see below), whose sum is σ = 159516. Its totient is φ = 40480.

The previous prime is 80989. The next prime is 81001. The reversal of 80992 is 29908.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 80992.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1234 + ... + 1297.

It is an arithmetic number, because the mean of its divisors is an integer number (13293).

280992 is an apocalyptic number.

It is an amenable number.

80992 is a deficient number, since it is larger than the sum of its proper divisors (78524).

80992 is a wasteful number, since it uses less digits than its factorization.

80992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 80992 is about 284.5909345007. The cubic root of 80992 is about 43.2660626183.

The spelling of 80992 in words is "eighty thousand, nine hundred ninety-two".

Divisors: 1 2 4 8 16 32 2531 5062 10124 20248 40496 80992