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23106745 = 517326713
BaseRepresentation
bin101100000100…
…1010010111001
31121110221111101
41120021102321
521403403440
62143131401
7400255414
oct130112271
947427441
1023106745
1112052492
1278a3b61
134a3053c
1430d6b7b
15206669a
hex16094b9

23106745 has 8 divisors (see below), whose sum is σ = 27889416. Its totient is φ = 18377856.

The previous prime is 23106731. The next prime is 23106799. The reversal of 23106745 is 54760132.

It can be written as a sum of positive squares in 4 ways, for example, as 13749264 + 9357481 = 3708^2 + 3059^2 .

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 23106745 - 29 = 23106233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12492 + ... + 14221.

It is an arithmetic number, because the mean of its divisors is an integer number (3486177).

Almost surely, 223106745 is an apocalyptic number.

It is an amenable number.

23106745 is a deficient number, since it is larger than the sum of its proper divisors (4782671).

23106745 is a wasteful number, since it uses less digits than its factorization.

23106745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26891.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 23106745 is about 4806.9475761651. The cubic root of 23106745 is about 284.8259735772.

Adding to 23106745 its reverse (54760132), we get a palindrome (77866877).

The spelling of 23106745 in words is "twenty-three million, one hundred six thousand, seven hundred forty-five".

Divisors: 1 5 173 865 26713 133565 4621349 23106745