Search a number
-
+
30023243 = 373792141
BaseRepresentation
bin111001010000…
…1111001001011
32002111100010222
41302201321023
530141220433
62551300255
7513123215
oct162417113
962440128
1030023243
1115a469a8
12a07a68b
1362b2743
143db75b5
152980b98
hex1ca1e4b

30023243 has 8 divisors (see below), whose sum is σ = 30930480. Its totient is φ = 29121120.

The previous prime is 30023219. The next prime is 30023251. The reversal of 30023243 is 34232003.

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

It is a cyclic number.

It is not a de Polignac number, because 30023243 - 214 = 30006859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30023293) 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 7 ways as a sum of consecutive naturals, for example, 12953 + ... + 15093.

It is an arithmetic number, because the mean of its divisors is an integer number (3866310).

Almost surely, 230023243 is an apocalyptic number.

30023243 is a deficient number, since it is larger than the sum of its proper divisors (907237).

30023243 is a wasteful number, since it uses less digits than its factorization.

30023243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 30023243 is about 5479.3469501392. The cubic root of 30023243 is about 310.8034758860.

Adding to 30023243 its reverse (34232003), we get a palindrome (64255246).

The spelling of 30023243 in words is "thirty million, twenty-three thousand, two hundred forty-three".

Divisors: 1 37 379 2141 14023 79217 811439 30023243