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80825349 = 3112984457
BaseRepresentation
bin1001101000101…
…00110000000101
312122002100112110
410310110300011
5131142402344
612004211233
72001001263
oct464246005
9178070473
1080825349
1141695310
1223099b19
131398bc67
14aa3d433
1571683b9
hex4d14c05

80825349 has 16 divisors (see below), whose sum is σ = 121619520. Its totient is φ = 47295360.

The previous prime is 80825341. The next prime is 80825359. The reversal of 80825349 is 94352808.

It is a happy number.

It is not a de Polignac number, because 80825349 - 23 = 80825341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80825341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41272 + ... + 43185.

It is an arithmetic number, because the mean of its divisors is an integer number (7601220).

Almost surely, 280825349 is an apocalyptic number.

It is an amenable number.

80825349 is a deficient number, since it is larger than the sum of its proper divisors (40794171).

80825349 is a wasteful number, since it uses less digits than its factorization.

80825349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84500.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 80825349 is about 8990.2919307440. The cubic root of 80825349 is about 432.3636716013.

It can be divided in two parts, 8082 and 5349, that added together give a palindrome (13431).

The spelling of 80825349 in words is "eighty million, eight hundred twenty-five thousand, three hundred forty-nine".

Divisors: 1 3 11 29 33 87 319 957 84457 253371 929027 2449253 2787081 7347759 26941783 80825349