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126918764 = 2274532813
BaseRepresentation
bin1111001000010…
…10000001101100
322211211010210222
413210022001230
5224442400024
620332150512
73100535360
oct744120154
9284733728
10126918764
1165707a45
1236608438
13203aa17b
1412bdb2a0
15b22085e
hex790a06c

126918764 has 12 divisors (see below), whose sum is σ = 253837584. Its totient is φ = 54393744.

The previous prime is 126918733. The next prime is 126918767. The reversal of 126918764 is 467819621.

126918764 is an admirable number.

It is a super-3 number, since 3×1269187643 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (126918767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2266379 + ... + 2266434.

It is an arithmetic number, because the mean of its divisors is an integer number (21153132).

Almost surely, 2126918764 is an apocalyptic number.

126918764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

126918764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126918764 is a wasteful number, since it uses less digits than its factorization.

126918764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532824 (or 4532822 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 126918764 is about 11265.8228283601. The cubic root of 126918764 is about 502.5453721727.

The spelling of 126918764 in words is "one hundred twenty-six million, nine hundred eighteen thousand, seven hundred sixty-four".

Divisors: 1 2 4 7 14 28 4532813 9065626 18131252 31729691 63459382 126918764