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302081 = 13191223
BaseRepresentation
bin1001001110000000001
3120100101012
41021300001
534131311
610250305
72365463
oct1116001
9510335
10302081
11196a5a
12126995
13a7660
147c133
155e78b
hex49c01

302081 has 8 divisors (see below), whose sum is σ = 342720. Its totient is φ = 263952.

The previous prime is 302053. The next prime is 302111. The reversal of 302081 is 180203.

Adding to 302081 its reverse (180203), we get a palindrome (482284).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 302081 - 210 = 301057 is a prime.

It is a super-2 number, since 2×3020812 = 182505861122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (302581) 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, 365 + ... + 858.

It is an arithmetic number, because the mean of its divisors is an integer number (42840).

It is a Proth number, since it is equal to 295 ⋅ 210 + 1 and 295 < 210.

2302081 is an apocalyptic number.

It is an amenable number.

302081 is a deficient number, since it is larger than the sum of its proper divisors (40639).

302081 is a wasteful number, since it uses less digits than its factorization.

302081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 302081 is about 549.6189589161. The cubic root of 302081 is about 67.0977262517.

The spelling of 302081 in words is "three hundred two thousand, eighty-one".

Divisors: 1 13 19 247 1223 15899 23237 302081