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80002 = 21317181
BaseRepresentation
bin10011100010000010
311001202001
4103202002
510030002
61414214
7452146
oct234202
9131661
1080002
115511a
123a36a
132a550
1421226
1518a87
hex13882

80002 has 16 divisors (see below), whose sum is σ = 137592. Its totient is φ = 34560.

The previous prime is 79999. The next prime is 80021. The reversal of 80002 is 20008.

80002 = T198 + T199 + ... + T201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 40401 + 39601 = 201^2 + 199^2 .

It is not an unprimeable number, because it can be changed into a prime (2) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352 + ... + 532.

280002 is an apocalyptic number.

80002 is a deficient number, since it is larger than the sum of its proper divisors (57590).

80002 is a wasteful number, since it uses less digits than its factorization.

80002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 80002 is about 282.8462479864. The cubic root of 80002 is about 43.0890528701.

The spelling of 80002 in words is "eighty thousand, two".

Divisors: 1 2 13 17 26 34 181 221 362 442 2353 3077 4706 6154 40001 80002