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268987480 = 2357392119
BaseRepresentation
bin10000000010000…
…110110001011000
3200202010222110021
4100002012301120
51022330044410
642405200224
76444233026
oct2002066130
9622128407
10268987480
11128922303
1276100074
134395ccb8
1427a1d716
1518934eda
hex10086c58

268987480 has 32 divisors (see below), whose sum is σ = 613519200. Its totient is φ = 106119936.

The previous prime is 268987471. The next prime is 268987483. The reversal of 268987480 is 84789862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268987483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43140 + ... + 48979.

It is an arithmetic number, because the mean of its divisors is an integer number (19172475).

Almost surely, 2268987480 is an apocalyptic number.

268987480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268987480 is an abundant number, since it is smaller than the sum of its proper divisors (344531720).

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

268987480 is a wasteful number, since it uses less digits than its factorization.

268987480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92203 (or 92199 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 268987480 is about 16400.8377834792. The cubic root of 268987480 is about 645.5214660015.

The spelling of 268987480 in words is "two hundred sixty-eight million, nine hundred eighty-seven thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 73 146 292 365 584 730 1460 2920 92119 184238 368476 460595 736952 921190 1842380 3684760 6724687 13449374 26898748 33623435 53797496 67246870 134493740 268987480