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80448189 = 3137319531
BaseRepresentation
bin1001100101110…
…00101010111101
312121101012011120
410302320222331
5131043320224
611552141153
71664540553
oct462705275
9177335146
1080448189
1141457a08
1222b377b9
13138893a3
14a981bd3
1570e1779
hex4cb8abd

80448189 has 8 divisors (see below), whose sum is σ = 107347872. Its totient is φ = 53590320.

The previous prime is 80448169. The next prime is 80448209. The reversal of 80448189 is 98184408.

It is an interprime number because it is at equal distance from previous prime (80448169) and next prime (80448209).

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

It is not a de Polignac number, because 80448189 - 27 = 80448061 is a prime.

It is a super-2 number, since 2×804481892 = 12943822226759442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80448189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80448139) 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, 5647 + ... + 13884.

It is an arithmetic number, because the mean of its divisors is an integer number (13418484).

Almost surely, 280448189 is an apocalyptic number.

It is an amenable number.

80448189 is a deficient number, since it is larger than the sum of its proper divisors (26899683).

80448189 is a wasteful number, since it uses less digits than its factorization.

80448189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20907.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 80448189 is about 8969.2914435868. The cubic root of 80448189 is about 431.6901016050.

The spelling of 80448189 in words is "eighty million, four hundred forty-eight thousand, one hundred eighty-nine".

Divisors: 1 3 1373 4119 19531 58593 26816063 80448189