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23152385 = 517272381
BaseRepresentation
bin101100001010…
…0011100000001
31121120021002202
41120110130001
521411334020
62144122545
7400535444
oct130243401
947507082
1023152385
1112083803
127906455
134a48249
14310965b
152074e75
hex1614701

23152385 has 8 divisors (see below), whose sum is σ = 29417256. Its totient is φ = 17432320.

The previous prime is 23152373. The next prime is 23152391. The reversal of 23152385 is 58325132.

It can be written as a sum of positive squares in 4 ways, for example, as 3429904 + 19722481 = 1852^2 + 4441^2 .

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

It is not a de Polignac number, because 23152385 - 24 = 23152369 is a prime.

It is a Duffinian number.

It is a Curzon 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, 136106 + ... + 136275.

It is an arithmetic number, because the mean of its divisors is an integer number (3677157).

Almost surely, 223152385 is an apocalyptic number.

It is an amenable number.

23152385 is a deficient number, since it is larger than the sum of its proper divisors (6264871).

23152385 is a wasteful number, since it uses less digits than its factorization.

23152385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272403.

The product of its digits is 7200, while the sum is 29.

The square root of 23152385 is about 4811.6925296615. The cubic root of 23152385 is about 285.0133778475.

The spelling of 23152385 in words is "twenty-three million, one hundred fifty-two thousand, three hundred eighty-five".

Divisors: 1 5 17 85 272381 1361905 4630477 23152385