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30002213 = 115326021
BaseRepresentation
bin111001001110…
…0110000100101
32002110021022002
41302130300211
530140032323
62551015045
7513005003
oct162346045
962407262
1030002213
1115a3211a
12a06a485
1362a5cb7
143dada73
152979828
hex1c9cc25

30002213 has 4 divisors (see below), whose sum is σ = 30029388. Its totient is φ = 29975040.

The previous prime is 30002207. The next prime is 30002233. The reversal of 30002213 is 31220003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27384289 + 2617924 = 5233^2 + 1618^2 .

It is a cyclic number.

It is not a de Polignac number, because 30002213 - 214 = 29985829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30002194 and 30002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30002233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11858 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (7507347).

Almost surely, 230002213 is an apocalyptic number.

It is an amenable number.

30002213 is a deficient number, since it is larger than the sum of its proper divisors (27175).

30002213 is a wasteful number, since it uses less digits than its factorization.

30002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27174.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30002213 is about 5477.4275896629. The cubic root of 30002213 is about 310.7308907470.

Adding to 30002213 its reverse (31220003), we get a palindrome (61222216).

The spelling of 30002213 in words is "thirty million, two thousand, two hundred thirteen".

Divisors: 1 1153 26021 30002213