Search a number
-
+
23000442 = 2343591511
BaseRepresentation
bin101011110111…
…1010101111010
31121021112200020
41113233111322
521342003232
62140551310
7366333453
oct127572572
947245606
1023000442
1111a8a633
127852536
1349c403a
1430aa12a
152044e2c
hex15ef57a

23000442 has 32 divisors (see below), whose sum is σ = 47900160. Its totient is φ = 7356720.

The previous prime is 23000429. The next prime is 23000447. The reversal of 23000442 is 24400032.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23000447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14467 + ... + 15977.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 223000442 is an apocalyptic number.

23000442 is an abundant number, since it is smaller than the sum of its proper divisors (24899718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23000442 is a wasteful number, since it uses less digits than its factorization.

23000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 23000442 is about 4795.8776047768. The cubic root of 23000442 is about 284.3885196970.

Adding to 23000442 its reverse (24400032), we get a palindrome (47400474).

The spelling of 23000442 in words is "twenty-three million, four hundred forty-two", and thus it is an aban number.

Divisors: 1 2 3 6 43 59 86 118 129 177 258 354 1511 2537 3022 4533 5074 7611 9066 15222 64973 89149 129946 178298 194919 267447 389838 534894 3833407 7666814 11500221 23000442