Search a number
-
+
1223030432 = 25132939977
BaseRepresentation
bin100100011100101…
…1111011010100000
310011020100101100102
41020321133122200
510001043433212
6321205441532
742210405251
oct11071373240
93136311312
101223030432
11578406958
122a17102a8
131664c9060
14b8606b28
15725895c2
hex48e5f6a0

1223030432 has 24 divisors (see below), whose sum is σ = 2593060596. Its totient is φ = 564475392.

The previous prime is 1223030387. The next prime is 1223030443. The reversal of 1223030432 is 2340303221.

It can be written as a sum of positive squares in 2 ways, for example, as 890186896 + 332843536 = 29836^2 + 18244^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469573 + ... + 1470404.

Almost surely, 21223030432 is an apocalyptic number.

It is an amenable number.

1223030432 is an abundant number, since it is smaller than the sum of its proper divisors (1370030164).

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

1223030432 is a wasteful number, since it uses less digits than its factorization.

1223030432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2940000 (or 2939992 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1223030432 is about 34971.8519955692. The cubic root of 1223030432 is about 1069.4137272175.

Adding to 1223030432 its reverse (2340303221), we get a palindrome (3563333653).

The spelling of 1223030432 in words is "one billion, two hundred twenty-three million, thirty thousand, four hundred thirty-two".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 2939977 5879954 11759908 23519816 38219701 47039632 76439402 94079264 152878804 305757608 611515216 1223030432