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30842210 = 2573161233
BaseRepresentation
bin111010110100…
…1110101100010
32011000221120002
41311221311202
530343422320
63021020002
7523103660
oct165516542
964027502
1030842210
1116456233
12a3b4602
13650b439
14414bc30
152a93675
hex1d69d62

30842210 has 64 divisors (see below), whose sum is σ = 66852864. Its totient is φ = 10022400.

The previous prime is 30842183. The next prime is 30842213. The reversal of 30842210 is 1224803.

It is not an unprimeable number, because it can be changed into a prime (30842213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132254 + ... + 132486.

It is an arithmetic number, because the mean of its divisors is an integer number (1044576).

Almost surely, 230842210 is an apocalyptic number.

30842210 is an abundant number, since it is smaller than the sum of its proper divisors (36010654).

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

30842210 is a wasteful number, since it uses less digits than its factorization.

30842210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30842210 is about 5553.5763252160. The cubic root of 30842210 is about 313.6041707870.

The spelling of 30842210 in words is "thirty million, eight hundred forty-two thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 31 35 61 62 70 122 155 217 233 305 310 427 434 466 610 854 1085 1165 1631 1891 2135 2170 2330 3262 3782 4270 7223 8155 9455 13237 14213 14446 16310 18910 26474 28426 36115 50561 66185 71065 72230 99491 101122 132370 142130 198982 252805 440603 497455 505610 881206 994910 2203015 3084221 4406030 6168442 15421105 30842210