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30044431 = 417110321
BaseRepresentation
bin111001010011…
…1000100001111
32002112102012201
41302213010033
530142410211
62551542331
7513242044
oct162470417
962472181
1030044431
1115a6090a
12a08a9a7
1362bc291
143dc11cb
1529870c1
hex1ca710f

30044431 has 8 divisors (see below), whose sum is σ = 31213728. Its totient is φ = 28896000.

The previous prime is 30044419. The next prime is 30044447. The reversal of 30044431 is 13444003.

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 30044431 - 27 = 30044303 is a prime.

It is a super-2 number, since 2×300444312 = 1805335668227522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30044399 and 30044408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30044461) 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, 2250 + ... + 8071.

It is an arithmetic number, because the mean of its divisors is an integer number (3901716).

Almost surely, 230044431 is an apocalyptic number.

30044431 is a deficient number, since it is larger than the sum of its proper divisors (1169297).

30044431 is a wasteful number, since it uses less digits than its factorization.

30044431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10433.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30044431 is about 5481.2800512289. The cubic root of 30044431 is about 310.8765720927.

Adding to 30044431 its reverse (13444003), we get a palindrome (43488434).

The spelling of 30044431 in words is "thirty million, forty-four thousand, four hundred thirty-one".

Divisors: 1 41 71 2911 10321 423161 732791 30044431