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30212230 = 2517434133
BaseRepresentation
bin111001101000…
…0000010000110
32002211221101111
41303100002012
530213242410
62555315234
7514541206
oct163200206
962757344
1030212230
1116065994
12a14bb1a
13634a779
144026406
1529bbb8a
hex1cd0086

30212230 has 32 divisors (see below), whose sum is σ = 58934304. Its totient is φ = 11106816.

The previous prime is 30212227. The next prime is 30212233. The reversal of 30212230 is 3221203.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30212227) and next prime (30212233).

It is a self number, because there is not a number n which added to its sum of digits gives 30212230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5244 + ... + 9376.

It is an arithmetic number, because the mean of its divisors is an integer number (1841697).

Almost surely, 230212230 is an apocalyptic number.

30212230 is a deficient number, since it is larger than the sum of its proper divisors (28722074).

30212230 is a wasteful number, since it uses less digits than its factorization.

30212230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30212230 is about 5496.5652911614. The cubic root of 30212230 is about 311.4542494689.

Adding to 30212230 its reverse (3221203), we get a palindrome (33433433).

The spelling of 30212230 in words is "thirty million, two hundred twelve thousand, two hundred thirty".

Divisors: 1 2 5 10 17 34 43 85 86 170 215 430 731 1462 3655 4133 7310 8266 20665 41330 70261 140522 177719 351305 355438 702610 888595 1777190 3021223 6042446 15106115 30212230