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23040554 = 261188857
BaseRepresentation
bin101011111100…
…1001000101010
31121100120200212
41113321020222
521344244204
62141501122
7366561425
oct127711052
947316625
1023040554
1112007789
1278717a2
134a09384
1430ba9bc
152051c6e
hex15f922a

23040554 has 8 divisors (see below), whose sum is σ = 35127588. Its totient is φ = 11331360.

The previous prime is 23040553. The next prime is 23040557. The reversal of 23040554 is 45504032.

It can be written as a sum of positive squares in 2 ways, for example, as 20566225 + 2474329 = 4535^2 + 1573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (23040553) 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 3 ways as a sum of consecutive naturals, for example, 94307 + ... + 94550.

Almost surely, 223040554 is an apocalyptic number.

23040554 is a deficient number, since it is larger than the sum of its proper divisors (12087034).

23040554 is a wasteful number, since it uses less digits than its factorization.

23040554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188920.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 23040554 is about 4800.0577079864. The cubic root of 23040554 is about 284.5537450341.

Adding to 23040554 its reverse (45504032), we get a palindrome (68544586).

The spelling of 23040554 in words is "twenty-three million, forty thousand, five hundred fifty-four".

Divisors: 1 2 61 122 188857 377714 11520277 23040554