Search a number
-
+
23044405 = 54608881
BaseRepresentation
bin101011111101…
…0000100110101
31121100202222111
41113322010311
521344410110
62141531021
7366605566
oct127720465
947322874
1023044405
111200a66a
127873a71
134a0b057
1430bc16d
152052e8a
hex15fa135

23044405 has 4 divisors (see below), whose sum is σ = 27653292. Its totient is φ = 18435520.

The previous prime is 23044391. The next prime is 23044409. The reversal of 23044405 is 50444032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6185169 + 16859236 = 2487^2 + 4106^2 .

It is not a de Polignac number, because 23044405 - 213 = 23036213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23044409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304436 + ... + 2304445.

It is an arithmetic number, because the mean of its divisors is an integer number (6913323).

Almost surely, 223044405 is an apocalyptic number.

It is an amenable number.

23044405 is a deficient number, since it is larger than the sum of its proper divisors (4608887).

23044405 is an equidigital number, since it uses as much as digits as its factorization.

23044405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608886.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 23044405 is about 4800.4588322368. The cubic root of 23044405 is about 284.5695975960.

Adding to 23044405 its reverse (50444032), we get a palindrome (73488437).

The spelling of 23044405 in words is "twenty-three million, forty-four thousand, four hundred five".

Divisors: 1 5 4608881 23044405