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286914980 = 225112944971
BaseRepresentation
bin10001000110011…
…111100110100100
3201222212210100202
4101012133212210
51041422234410
644245330032
710052510552
oct2106374644
9658783322
10286914980
11137a57520
1280106918
1347598ca1
142a168bd2
151a2c6ca5
hex1119f9a4

286914980 has 48 divisors (see below), whose sum is σ = 679976640. Its totient is φ = 100732800.

The previous prime is 286914973. The next prime is 286914989. The reversal of 286914980 is 89419682.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (286914989) 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, 16106 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (14166180).

Almost surely, 2286914980 is an apocalyptic number.

286914980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

286914980 is an abundant number, since it is smaller than the sum of its proper divisors (393061660).

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

286914980 is a wasteful number, since it uses less digits than its factorization.

286914980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45020 (or 45018 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 286914980 is about 16938.5648742743. The cubic root of 286914980 is about 659.5550873527. Note that the first 3 decimals are identical.

The spelling of 286914980 in words is "two hundred eighty-six million, nine hundred fourteen thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 11 20 22 29 44 55 58 110 116 145 220 290 319 580 638 1276 1595 3190 6380 44971 89942 179884 224855 449710 494681 899420 989362 1304159 1978724 2473405 2608318 4946810 5216636 6520795 9893620 13041590 14345749 26083180 28691498 57382996 71728745 143457490 286914980