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23444421 = 37111337211
BaseRepresentation
bin101100101101…
…1101111000101
31122010002200220
41121123233011
522000210141
62154254553
7403163040
oct131335705
948102626
1023444421
1112263160
127a27459
134b1b150
143183c57
1520d1766
hex165bbc5

23444421 has 64 divisors (see below), whose sum is σ = 43309056. Its totient is φ = 10886400.

The previous prime is 23444419. The next prime is 23444431. The reversal of 23444421 is 12444432.

It is a happy number.

It is not a de Polignac number, because 23444421 - 21 = 23444419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23444391 and 23444400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23444431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111006 + ... + 111216.

It is an arithmetic number, because the mean of its divisors is an integer number (676704).

Almost surely, 223444421 is an apocalyptic number.

23444421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23444421 is a deficient number, since it is larger than the sum of its proper divisors (19864635).

23444421 is a wasteful number, since it uses less digits than its factorization.

23444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282.

The product of its digits is 3072, while the sum is 24.

The square root of 23444421 is about 4841.9439278042. The cubic root of 23444421 is about 286.2067269941.

Adding to 23444421 its reverse (12444432), we get a palindrome (35888853).

It can be divided in two parts, 23 and 444421, that added together give a palindrome (444444).

The spelling of 23444421 in words is "twenty-three million, four hundred forty-four thousand, four hundred twenty-one".

Divisors: 1 3 7 11 13 21 33 37 39 77 91 111 143 211 231 259 273 407 429 481 633 777 1001 1221 1443 1477 2321 2743 2849 3003 3367 4431 5291 6963 7807 8229 8547 10101 15873 16247 19201 23421 30173 37037 48741 54649 57603 85877 90519 101491 111111 163947 211211 257631 304473 601139 633633 710437 1116401 1803417 2131311 3349203 7814807 23444421