Search a number
-
+
23530430 = 2571130559
BaseRepresentation
bin101100111000…
…0101110111110
31122021110200102
41121300232332
522010433210
62200201102
7404001560
oct131605676
948243612
1023530430
1112311840
127a69192
134b4b341
1431a7330
1520ebea5
hex1670bbe

23530430 has 32 divisors (see below), whose sum is σ = 52807680. Its totient is φ = 7333920.

The previous prime is 23530427. The next prime is 23530447. The reversal of 23530430 is 3403532.

It is a super-2 number, since 2×235304302 = 1107362271969800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14510 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (1650240).

Almost surely, 223530430 is an apocalyptic number.

23530430 is an abundant number, since it is smaller than the sum of its proper divisors (29277250).

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

23530430 is a wasteful number, since it uses less digits than its factorization.

23530430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30584.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 23530430 is about 4850.8174568829. The cubic root of 23530430 is about 286.5562957720.

Adding to 23530430 its reverse (3403532), we get a palindrome (26933962).

The spelling of 23530430 in words is "twenty-three million, five hundred thirty thousand, four hundred thirty".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 154 385 770 30559 61118 152795 213913 305590 336149 427826 672298 1069565 1680745 2139130 2353043 3361490 4706086 11765215 23530430