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123830285 = 5163151939
BaseRepresentation
bin1110110000110…
…00000000001101
322122000020012212
413120120000031
5223200032120
620142040205
73032353145
oct730300015
9278006185
10123830285
1163998587
1235579065
131c868477
1412635925
15ad106c5
hex761800d

123830285 has 8 divisors (see below), whose sum is σ = 149508960. Its totient is φ = 98455824.

The previous prime is 123830243. The next prime is 123830299. The reversal of 123830285 is 582038321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123830285 - 26 = 123830221 is a prime.

It is a super-5 number, since 5×1238302855 (a number of 42 digits) contains 55555 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75155 + ... + 76784.

It is an arithmetic number, because the mean of its divisors is an integer number (18688620).

Almost surely, 2123830285 is an apocalyptic number.

It is an amenable number.

123830285 is a deficient number, since it is larger than the sum of its proper divisors (25678675).

123830285 is a wasteful number, since it uses less digits than its factorization.

123830285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152107.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 123830285 is about 11127.9056879540. The cubic root of 123830285 is about 498.4354897211.

The spelling of 123830285 in words is "one hundred twenty-three million, eight hundred thirty thousand, two hundred eighty-five".

Divisors: 1 5 163 815 151939 759695 24766057 123830285