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80600149 = 721644901
BaseRepresentation
bin1001100110111…
…01110001010101
312121122220121201
410303131301111
5131113201044
611555312501
71666042600
oct463356125
9177586551
1080600149
11415510a3
1222bab731
13139105c6
14a9c1337
1571217d4
hex4cddc55

80600149 has 6 divisors (see below), whose sum is σ = 93759414. Its totient is φ = 69085800.

The previous prime is 80600089. The next prime is 80600161. The reversal of 80600149 is 94100608.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 9922500 = 8407^2 + 3150^2 .

It is not a de Polignac number, because 80600149 - 27 = 80600021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80600449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 822402 + ... + 822499.

It is an arithmetic number, because the mean of its divisors is an integer number (15626569).

Almost surely, 280600149 is an apocalyptic number.

It is an amenable number.

80600149 is a deficient number, since it is larger than the sum of its proper divisors (13159265).

80600149 is a wasteful number, since it uses less digits than its factorization.

80600149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644915 (or 1644908 counting only the distinct ones).

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

The square root of 80600149 is about 8977.7585732743. The cubic root of 80600149 is about 431.9617396528.

The spelling of 80600149 in words is "eighty million, six hundred thousand, one hundred forty-nine".

Divisors: 1 7 49 1644901 11514307 80600149