Search a number
-
+
23943205 = 5111333487
BaseRepresentation
bin101101101010…
…1100000100101
31200001102220101
41123111200211
522112140310
62213104101
7410341156
oct133254045
950042811
1023943205
1112573980
128028031
134c641a0
14327392d
15217e43a
hex16d5825

23943205 has 16 divisors (see below), whose sum is σ = 33755904. Its totient is φ = 16073280.

The previous prime is 23943193. The next prime is 23943209. The reversal of 23943205 is 50234932.

It is not a de Polignac number, because 23943205 - 27 = 23943077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23943209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16029 + ... + 17458.

It is an arithmetic number, because the mean of its divisors is an integer number (2109744).

Almost surely, 223943205 is an apocalyptic number.

It is an amenable number.

23943205 is a deficient number, since it is larger than the sum of its proper divisors (9812699).

23943205 is a wasteful number, since it uses less digits than its factorization.

23943205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33516.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 23943205 is about 4893.1794367262. The cubic root of 23943205 is about 288.2221994402. Note that the first 3 decimals are identical.

It can be divided in two parts, 2394320 and 5, that multiplied together give a square (11971600 = 34602).

The spelling of 23943205 in words is "twenty-three million, nine hundred forty-three thousand, two hundred five".

Divisors: 1 5 11 13 55 65 143 715 33487 167435 368357 435331 1841785 2176655 4788641 23943205