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23115470 = 257714651
BaseRepresentation
bin101100000101…
…1011011001110
31121111101110112
41120023123032
521404143340
62143240022
7400323020
oct130133316
947441415
1023115470
1112058aa4
1278a9012
134a344c1
1430da010
152069065
hex160b6ce

23115470 has 32 divisors (see below), whose sum is σ = 48231936. Its totient is φ = 7812000.

The previous prime is 23115451. The next prime is 23115497. The reversal of 23115470 is 7451132.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2645 + ... + 7295.

It is an arithmetic number, because the mean of its divisors is an integer number (1507248).

Almost surely, 223115470 is an apocalyptic number.

23115470 is an abundant number, since it is smaller than the sum of its proper divisors (25116466).

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

23115470 is a wasteful number, since it uses less digits than its factorization.

23115470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4736.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 23115470 is about 4807.8550310923. The cubic root of 23115470 is about 284.8618187225.

The spelling of 23115470 in words is "twenty-three million, one hundred fifteen thousand, four hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 71 142 355 497 710 994 2485 4651 4970 9302 23255 32557 46510 65114 162785 325570 330221 660442 1651105 2311547 3302210 4623094 11557735 23115470