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30205214 = 2134332683
BaseRepresentation
bin111001100111…
…0010100011110
32002211120202122
41303032110132
530213031324
62555222542
7514511564
oct163162436
962746678
1030205214
1116060696
12a147a52
136347510
144023a34
1529b9a5e
hex1cce51e

30205214 has 16 divisors (see below), whose sum is σ = 48923952. Its totient is φ = 13903488.

The previous prime is 30205213. The next prime is 30205229. The reversal of 30205214 is 41250203.

It is a junction number, because it is equal to n+sod(n) for n = 30205192 and 30205201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205213) 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, 9917 + ... + 12599.

It is an arithmetic number, because the mean of its divisors is an integer number (3057747).

Almost surely, 230205214 is an apocalyptic number.

30205214 is a deficient number, since it is larger than the sum of its proper divisors (18718738).

30205214 is a wasteful number, since it uses less digits than its factorization.

30205214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 30205214 is about 5495.9270373614. The cubic root of 30205214 is about 311.4301385687.

Adding to 30205214 its reverse (41250203), we get a palindrome (71455417).

The spelling of 30205214 in words is "thirty million, two hundred five thousand, two hundred fourteen".

Divisors: 1 2 13 26 433 866 2683 5366 5629 11258 34879 69758 1161739 2323478 15102607 30205214