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30612230 = 25111997151
BaseRepresentation
bin111010011000…
…1101100000110
32010121021002022
41310301230012
530314042410
63012043142
7521125325
oct164615406
963537068
1030612230
1116309470
12a3034b2
13645a85c
1440cc0bc
152a4a455
hex1d31b06

30612230 has 64 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 10368000.

The previous prime is 30612229. The next prime is 30612247. The reversal of 30612230 is 3221603.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30612199 and 30612208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202655 + ... + 202805.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 230612230 is an apocalyptic number.

30612230 is an abundant number, since it is smaller than the sum of its proper divisors (33738490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30612230 is a wasteful number, since it uses less digits than its factorization.

30612230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30612230 is about 5532.8320054019. The cubic root of 30612230 is about 312.8227449595.

Adding to 30612230 its reverse (3221603), we get a palindrome (33833833).

The spelling of 30612230 in words is "thirty million, six hundred twelve thousand, two hundred thirty".

Divisors: 1 2 5 10 11 19 22 38 55 95 97 110 151 190 194 209 302 418 485 755 970 1045 1067 1510 1661 1843 2090 2134 2869 3322 3686 5335 5738 8305 9215 10670 14345 14647 16610 18430 20273 28690 29294 31559 40546 63118 73235 101365 146470 157795 161117 202730 278293 315590 322234 556586 805585 1391465 1611170 2782930 3061223 6122446 15306115 30612230