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2128902930 = 2325711307201
BaseRepresentation
bin111111011100100…
…0111101100010010
312111100220110210200
41332321013230102
513324444343210
6551125440030
7103520243040
oct17671075422
95440813720
102128902930
119a278a310
124b4b70016
1327c09a69b
14162a51390
15c6d760c0
hex7ee47b12

2128902930 has 96 divisors (see below), whose sum is σ = 6900985728. Its totient is φ = 442368000.

The previous prime is 2128902883. The next prime is 2128902973. The reversal of 2128902930 is 392098212.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146671 + ... + 160530.

It is an arithmetic number, because the mean of its divisors is an integer number (71885268).

Almost surely, 22128902930 is an apocalyptic number.

2128902930 is an abundant number, since it is smaller than the sum of its proper divisors (4772082798).

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

2128902930 is a wasteful number, since it uses less digits than its factorization.

2128902930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307232 (or 307229 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2128902930 is about 46140.0360858116. The cubic root of 2128902930 is about 1286.4274144917.

The spelling of 2128902930 in words is "two billion, one hundred twenty-eight million, nine hundred two thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 7 9 10 11 14 15 18 21 22 30 33 35 42 45 55 63 66 70 77 90 99 105 110 126 154 165 198 210 231 315 330 385 462 495 630 693 770 990 1155 1386 2310 3465 6930 307201 614402 921603 1536005 1843206 2150407 2764809 3072010 3379211 4300814 4608015 5529618 6451221 6758422 9216030 10137633 10752035 12902442 13824045 16896055 19353663 20275266 21504070 23654477 27648090 30412899 32256105 33792110 38707326 47308954 50688165 60825798 64512210 70963431 96768315 101376330 118272385 141926862 152064495 193536630 212890293 236544770 304128990 354817155 425780586 709634310 1064451465 2128902930