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30214285 = 515313947
BaseRepresentation
bin111001101000…
…0100010001101
32002212001012121
41303100202031
530213324120
62555332541
7514550203
oct163204215
962761177
1030214285
1116067492
12a151151
13634b69a
144027073
1529bc5aa
hex1cd088d

30214285 has 8 divisors (see below), whose sum is σ = 36290016. Its totient is φ = 24149520.

The previous prime is 30214271. The next prime is 30214297. The reversal of 30214285 is 58241203.

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

It is not a de Polignac number, because 30214285 - 223 = 21825677 is a prime.

It is a super-2 number, since 2×302142852 = 1825806036122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5682 + ... + 9628.

It is an arithmetic number, because the mean of its divisors is an integer number (4536252).

Almost surely, 230214285 is an apocalyptic number.

It is an amenable number.

30214285 is a deficient number, since it is larger than the sum of its proper divisors (6075731).

30214285 is a wasteful number, since it uses less digits than its factorization.

30214285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 30214285 is about 5496.7522229040. The cubic root of 30214285 is about 311.4613108915.

Adding to 30214285 its reverse (58241203), we get a palindrome (88455488).

The spelling of 30214285 in words is "thirty million, two hundred fourteen thousand, two hundred eighty-five".

Divisors: 1 5 1531 3947 7655 19735 6042857 30214285