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288876380 = 225131958477
BaseRepresentation
bin10001001101111…
…110011101011100
3202010120102220012
4101031332131130
51042423021010
644355342352
710105260122
oct2115763534
9663512805
10288876380
11139077111
12808b19b8
1347b04990
142a519912
151a563005
hex1137e75c

288876380 has 48 divisors (see below), whose sum is σ = 687701280. Its totient is φ = 101046528.

The previous prime is 288876373. The next prime is 288876397. The reversal of 288876380 is 83678882.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24299 + ... + 34178.

It is an arithmetic number, because the mean of its divisors is an integer number (14327110).

Almost surely, 2288876380 is an apocalyptic number.

288876380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

288876380 is an abundant number, since it is smaller than the sum of its proper divisors (398824900).

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

288876380 is a wasteful number, since it uses less digits than its factorization.

288876380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58518 (or 58516 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 288876380 is about 16996.3637287509. The cubic root of 288876380 is about 661.0546193965.

The spelling of 288876380 in words is "two hundred eighty-eight million, eight hundred seventy-six thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 19 20 26 38 52 65 76 95 130 190 247 260 380 494 988 1235 2470 4940 58477 116954 233908 292385 584770 760201 1111063 1169540 1520402 2222126 3040804 3801005 4444252 5555315 7602010 11110630 14443819 15204020 22221260 28887638 57775276 72219095 144438190 288876380