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80282161 = 4361127241
BaseRepresentation
bin1001100100100…
…00001000110001
312121001202102101
410302100020301
5131023012121
611544420401
71663246531
oct462201061
9177052371
1080282161
11413541a3
1222a77701
131382b94b
14a93b4c1
1570ac491
hex4c90231

80282161 has 16 divisors (see below), whose sum is σ = 84502528. Its totient is φ = 76204800.

The previous prime is 80282159. The next prime is 80282221. The reversal of 80282161 is 16128208.

It is a 3-Lehmer number, since φ(80282161) divides (80282161-1)3.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 80282161 - 21 = 80282159 is a prime.

It is a deceptive number, since it divides R80282160.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80282101) 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, 333001 + ... + 333241.

It is an arithmetic number, because the mean of its divisors is an integer number (5281408).

It is a Poulet number, since it divides 280282160-1.

Almost surely, 280282161 is an apocalyptic number.

It is an amenable number.

80282161 is a deficient number, since it is larger than the sum of its proper divisors (4220367).

80282161 is a wasteful number, since it uses less digits than its factorization.

80282161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 80282161 is about 8960.0313057489. The cubic root of 80282161 is about 431.3929248034.

The spelling of 80282161 in words is "eighty million, two hundred eighty-two thousand, one hundred sixty-one".

Divisors: 1 43 61 127 241 2623 5461 7747 10363 14701 30607 333121 632143 1316101 1867027 80282161