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80881189 = 1734713711
BaseRepresentation
bin1001101001000…
…10011000100101
312122012012010121
410310202120211
5131201144224
612005321541
72001323134
oct464423045
9178165117
1080881189
1141723264
12231062b1
13139ab4bc
14aa5591b
157179be4
hex4d22625

80881189 has 8 divisors (see below), whose sum is σ = 85891968. Its totient is φ = 75898560.

The previous prime is 80881169. The next prime is 80881211. The reversal of 80881189 is 98118808.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80881189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80881159) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 957 + ... + 12754.

It is an arithmetic number, because the mean of its divisors is an integer number (10736496).

Almost surely, 280881189 is an apocalyptic number.

It is an amenable number.

80881189 is a deficient number, since it is larger than the sum of its proper divisors (5010779).

80881189 is a wasteful number, since it uses less digits than its factorization.

80881189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14075.

The product of its (nonzero) digits is 36864, while the sum is 43.

The square root of 80881189 is about 8993.3969666639. The cubic root of 80881189 is about 432.4632180510.

The spelling of 80881189 in words is "eighty million, eight hundred eighty-one thousand, one hundred eighty-nine".

Divisors: 1 17 347 5899 13711 233087 4757717 80881189