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30205142814 = 2372119339871
BaseRepresentation
bin11100001000010111…
…011110011100011110
32212222001022020102010
4130020113132130132
5443330004032224
621513121012050
72116340322600
oct341027363436
985861266363
1030205142814
11118a0019950
125a2b784026
132b04a30192
1416677a9170
15bbbb4be29
hex7085de71e

30205142814 has 48 divisors (see below), whose sum is σ = 76661669376. Its totient is φ = 7845490800.

The previous prime is 30205142813. The next prime is 30205142831. The reversal of 30205142814 is 41824150203.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205142813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4666702 + ... + 4673169.

It is an arithmetic number, because the mean of its divisors is an integer number (1597118112).

Almost surely, 230205142814 is an apocalyptic number.

30205142814 is an abundant number, since it is smaller than the sum of its proper divisors (46456526562).

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

30205142814 is a wasteful number, since it uses less digits than its factorization.

30205142814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339901 (or 9339894 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

It can be divided in two parts, 302051 and 42814, that added together give a triangular number (344865 = T830).

The spelling of 30205142814 in words is "thirty billion, two hundred five million, one hundred forty-two thousand, eight hundred fourteen".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 49 66 77 98 147 154 231 294 462 539 1078 1617 3234 9339871 18679742 28019613 56039226 65379097 102738581 130758194 196137291 205477162 308215743 392274582 457653679 616431486 719170067 915307358 1372961037 1438340134 2157510201 2745922074 4315020402 5034190469 10068380938 15102571407 30205142814