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80206049 = 7111973751
BaseRepresentation
bin1001100011111…
…01100011100001
312120220220000102
410301331203201
5131013043144
611543032145
71662511610
oct461754341
9176826012
1080206049
1141301aa0
1222a3b655
1313803101
14a91b877
157094b4e
hex4c7d8e1

80206049 has 32 divisors (see below), whose sum is σ = 106844160. Its totient is φ = 58320000.

The previous prime is 80206043. The next prime is 80206079. The reversal of 80206049 is 94060208.

It is a cyclic number.

It is not a de Polignac number, because 80206049 - 220 = 79157473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80206043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106424 + ... + 107174.

It is an arithmetic number, because the mean of its divisors is an integer number (3338880).

Almost surely, 280206049 is an apocalyptic number.

It is an amenable number.

80206049 is a deficient number, since it is larger than the sum of its proper divisors (26638111).

80206049 is a wasteful number, since it uses less digits than its factorization.

80206049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 80206049 is about 8955.7829920114. The cubic root of 80206049 is about 431.2565534536.

The spelling of 80206049 in words is "eighty million, two hundred six thousand, forty-nine".

Divisors: 1 7 11 19 73 77 133 209 511 751 803 1387 1463 5257 5621 8261 9709 14269 15257 54823 57827 99883 106799 156959 383761 603053 1041637 1098713 4221371 7291459 11458007 80206049