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80002881 = 32710312329
BaseRepresentation
bin1001100010010…
…11111101000001
312120112120022200
410301023331001
5130440043011
611534423413
71661004360
oct461137501
9176476280
1080002881
1141183392
1222961b69
13137617aa
14a8a77d7
157054856
hex4c4bf41

80002881 has 24 divisors (see below), whose sum is σ = 133361280. Its totient is φ = 45268416.

The previous prime is 80002873. The next prime is 80002889. The reversal of 80002881 is 18820008.

It is an interprime number because it is at equal distance from previous prime (80002873) and next prime (80002889).

It is not a de Polignac number, because 80002881 - 23 = 80002873 is a prime.

It is a super-2 number, since 2×800028812 = 12800921936600322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80002889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 325 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (5556720).

Almost surely, 280002881 is an apocalyptic number.

It is an amenable number.

80002881 is a deficient number, since it is larger than the sum of its proper divisors (53358399).

80002881 is a wasteful number, since it uses less digits than its factorization.

80002881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12445 (or 12442 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 80002881 is about 8944.4329613453. The cubic root of 80002881 is about 430.8921103829.

Adding to 80002881 its reverse (18820008), we get a palindrome (98822889).

The spelling of 80002881 in words is "eighty million, two thousand, eight hundred eighty-one".

Divisors: 1 3 7 9 21 63 103 309 721 927 2163 6489 12329 36987 86303 110961 258909 776727 1269887 3809661 8889209 11428983 26667627 80002881