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80881044 = 2236740087
BaseRepresentation
bin1001101001000…
…10010110010100
312122012011221020
410310202112110
5131201143134
612005321140
72001322536
oct464422624
9178164836
1080881044
1141723142
12231061b0
13139ab40a
14aa55856
157179b49
hex4d22594

80881044 has 12 divisors (see below), whose sum is σ = 188722464. Its totient is φ = 26960344.

The previous prime is 80881039. The next prime is 80881079. The reversal of 80881044 is 44018808.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 80880996 and 80881014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370032 + ... + 3370055.

It is an arithmetic number, because the mean of its divisors is an integer number (15726872).

Almost surely, 280881044 is an apocalyptic number.

It is an amenable number.

80881044 is an abundant number, since it is smaller than the sum of its proper divisors (107841420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80881044 is a wasteful number, since it uses less digits than its factorization.

80881044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740094 (or 6740092 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 80881044 is about 8993.3889051903. The cubic root of 80881044 is about 432.4629596176.

The spelling of 80881044 in words is "eighty million, eight hundred eighty-one thousand, forty-four".

Divisors: 1 2 3 4 6 12 6740087 13480174 20220261 26960348 40440522 80881044