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123448630 = 2527145553
BaseRepresentation
bin1110101101110…
…10110100110110
322121021211200111
413112322310312
5223100324010
620125533234
73026203354
oct726726466
9277254614
10123448630
1163757868
123541421a
131c763836
14125767d4
15ac8758a
hex75bad36

123448630 has 16 divisors (see below), whose sum is σ = 223032384. Its totient is φ = 49196160.

The previous prime is 123448627. The next prime is 123448631. The reversal of 123448630 is 36844321.

It is a junction number, because it is equal to n+sod(n) for n = 123448592 and 123448601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123448631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20067 + ... + 25486.

It is an arithmetic number, because the mean of its divisors is an integer number (13939524).

Almost surely, 2123448630 is an apocalyptic number.

123448630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123448630 is a deficient number, since it is larger than the sum of its proper divisors (99583754).

123448630 is a wasteful number, since it uses less digits than its factorization.

123448630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45831.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 123448630 is about 11110.7438994876. The cubic root of 123448630 is about 497.9228898421.

The spelling of 123448630 in words is "one hundred twenty-three million, four hundred forty-eight thousand, six hundred thirty".

Divisors: 1 2 5 10 271 542 1355 2710 45553 91106 227765 455530 12344863 24689726 61724315 123448630