Search a number
-
+
30011233 = 74287319
BaseRepresentation
bin111001001111…
…0111101100001
32002110201200011
41302132331201
530140324413
62551124521
7513043210
oct162367541
962421604
1030011233
1115a3897a
12a073741
1362aa135
143db3077
15297c33d
hex1c9ef61

30011233 has 4 divisors (see below), whose sum is σ = 34298560. Its totient is φ = 25723908.

The previous prime is 30011161. The next prime is 30011269. The reversal of 30011233 is 33211003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-30011233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30011533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143653 + ... + 2143666.

It is an arithmetic number, because the mean of its divisors is an integer number (8574640).

Almost surely, 230011233 is an apocalyptic number.

It is an amenable number.

30011233 is a deficient number, since it is larger than the sum of its proper divisors (4287327).

30011233 is an equidigital number, since it uses as much as digits as its factorization.

30011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287326.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30011233 is about 5478.2509069958. The cubic root of 30011233 is about 310.7620274702.

Adding to 30011233 its reverse (33211003), we get a palindrome (63222236).

The spelling of 30011233 in words is "thirty million, eleven thousand, two hundred thirty-three".

Divisors: 1 7 4287319 30011233