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3000021 = 32934483
BaseRepresentation
bin1011011100011011010101
312122102020220
423130123111
51232000041
6144144553
734333263
oct13343325
95572226
103000021
111769a62
121008159
1381067b
14581433
153e3d66
hex2dc6d5

3000021 has 8 divisors (see below), whose sum is σ = 4138080. Its totient is φ = 1930992.

The previous prime is 3000017. The next prime is 3000029. The reversal of 3000021 is 1200003.

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

It is not a de Polignac number, because 3000021 - 22 = 3000017 is a prime.

3000021 is a modest number, since divided by 21 gives 3 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 2999973 and 3000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000029) 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 7 ways as a sum of consecutive naturals, for example, 17155 + ... + 17328.

It is an arithmetic number, because the mean of its divisors is an integer number (517260).

Almost surely, 23000021 is an apocalyptic number.

It is an amenable number.

3000021 is a deficient number, since it is larger than the sum of its proper divisors (1138059).

3000021 is a wasteful number, since it uses less digits than its factorization.

3000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34515.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 3000021 is about 1732.0568697361. The cubic root of 3000021 is about 144.2252935549.

Adding to 3000021 its reverse (1200003), we get a palindrome (4200024).

It can be divided in two parts, 300002 and 1, that added together give a palindrome (300003).

The spelling of 3000021 in words is "three million, twenty-one", and thus it is an aban number and an uban number.

Divisors: 1 3 29 87 34483 103449 1000007 3000021