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123263680 = 265385199
BaseRepresentation
bin1110101100011…
…01101011000000
322120221102222111
413112031223000
5223023414210
620121545104
73024503221
oct726155300
9276842874
10123263680
1163640911
1235345194
131c6ca5b7
1412529248
15ac4c88a
hex758dac0

123263680 has 28 divisors (see below), whose sum is σ = 293522400. Its totient is φ = 49305344.

The previous prime is 123263663. The next prime is 123263689. The reversal of 123263680 is 86362321.

It is not an unprimeable number, because it can be changed into a prime (123263689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192280 + ... + 192919.

Almost surely, 2123263680 is an apocalyptic number.

123263680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123263680 is an abundant number, since it is smaller than the sum of its proper divisors (170258720).

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

123263680 is an equidigital number, since it uses as much as digits as its factorization.

123263680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385216 (or 385206 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 123263680 is about 11102.4177547055. The cubic root of 123263680 is about 497.6741038578.

The spelling of 123263680 in words is "one hundred twenty-three million, two hundred sixty-three thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 385199 770398 1540796 1925995 3081592 3851990 6163184 7703980 12326368 15407960 24652736 30815920 61631840 123263680