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80912341 = 229353329
BaseRepresentation
bin1001101001010…
…01111111010101
312122020202212101
410310221333111
5131203143331
612010122101
72001513016
oct464517725
9178222771
1080912341
1141744704
1223120331
13139bc733
14aa6300d
157184061
hex4d29fd5

80912341 has 4 divisors (see below), whose sum is σ = 81265900. Its totient is φ = 80558784.

The previous prime is 80912329. The next prime is 80912347. The reversal of 80912341 is 14321908.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40640625 + 40271716 = 6375^2 + 6346^2 .

It is a cyclic number.

It is not a de Polignac number, because 80912341 - 25 = 80912309 is a prime.

It is a super-2 number, since 2×809123412 = 13093613852200562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80912347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176436 + ... + 176893.

It is an arithmetic number, because the mean of its divisors is an integer number (20316475).

Almost surely, 280912341 is an apocalyptic number.

It is an amenable number.

80912341 is a deficient number, since it is larger than the sum of its proper divisors (353559).

80912341 is a wasteful number, since it uses less digits than its factorization.

80912341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353558.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 80912341 is about 8995.1287372666. The cubic root of 80912341 is about 432.5187330810.

The spelling of 80912341 in words is "eighty million, nine hundred twelve thousand, three hundred forty-one".

Divisors: 1 229 353329 80912341