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23050305 = 3351131511
BaseRepresentation
bin101011111101…
…1100001000001
31121101002002000
41113323201001
521400102210
62142014213
7366632025
oct127734101
947332060
1023050305
1112014043
127877369
134a10945
1430c0385
152054ac0
hex15fb841

23050305 has 32 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 12176640.

The previous prime is 23050303. The next prime is 23050309. The reversal of 23050305 is 50305032.

It is not a de Polignac number, because 23050305 - 21 = 23050303 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23050303) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14500 + ... + 16010.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 223050305 is an apocalyptic number.

It is an amenable number.

23050305 is a deficient number, since it is larger than the sum of its proper divisors (18318015).

23050305 is a wasteful number, since it uses less digits than its factorization.

23050305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 23050305 is about 4801.0733174989. The cubic root of 23050305 is about 284.5938813988.

Adding to 23050305 its reverse (50305032), we get a palindrome (73355337).

The spelling of 23050305 in words is "twenty-three million, fifty thousand, three hundred five".

Divisors: 1 3 5 9 15 27 45 113 135 339 565 1017 1511 1695 3051 4533 5085 7555 13599 15255 22665 40797 67995 170743 203985 512229 853715 1536687 2561145 4610061 7683435 23050305