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123152056 = 23711571381
BaseRepresentation
bin1110101011100…
…10011010111000
322120201202212021
413111302122320
5223011331211
620115324224
73023526616
oct725623270
9276652767
10123152056
1163574a65
12352b0674
131c68b851
14124da6b6
15ac29771
hex75726b8

123152056 has 32 divisors (see below), whose sum is σ = 235824480. Its totient is φ = 60278400.

The previous prime is 123152047. The next prime is 123152101. The reversal of 123152056 is 650251321.

It is a super-3 number, since 3×1231520563 (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123152056.

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, 88486 + ... + 89866.

It is an arithmetic number, because the mean of its divisors is an integer number (7369515).

Almost surely, 2123152056 is an apocalyptic number.

It is an amenable number.

123152056 is a deficient number, since it is larger than the sum of its proper divisors (112672424).

123152056 is a wasteful number, since it uses less digits than its factorization.

123152056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 123152056 is about 11097.3896029652. The cubic root of 123152056 is about 497.5238320949.

The spelling of 123152056 in words is "one hundred twenty-three million, one hundred fifty-two thousand, fifty-six".

Divisors: 1 2 4 8 71 142 157 284 314 568 628 1256 1381 2762 5524 11048 11147 22294 44588 89176 98051 196102 216817 392204 433634 784408 867268 1734536 15394007 30788014 61576028 123152056