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30031244 = 2210968879
BaseRepresentation
bin111001010001…
…1110110001100
32002111202010022
41302203312030
530141444434
62551401312
7513155435
oct162436614
962452108
1030031244
1115a51a11
12a083238
1362b6289
143dba48c
15298322e
hex1ca3d8c

30031244 has 12 divisors (see below), whose sum is σ = 53037600. Its totient is φ = 14877648.

The previous prime is 30031237. The next prime is 30031247. The reversal of 30031244 is 44213003.

It is not an unprimeable number, because it can be changed into a prime (30031247) 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 3 ways as a sum of consecutive naturals, for example, 34004 + ... + 34875.

It is an arithmetic number, because the mean of its divisors is an integer number (4419800).

Almost surely, 230031244 is an apocalyptic number.

It is an amenable number.

30031244 is a deficient number, since it is larger than the sum of its proper divisors (23006356).

30031244 is a wasteful number, since it uses less digits than its factorization.

30031244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68992 (or 68990 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30031244 is about 5480.0770067582. The cubic root of 30031244 is about 310.8310824723.

Adding to 30031244 its reverse (44213003), we get a palindrome (74244247).

The spelling of 30031244 in words is "thirty million, thirty-one thousand, two hundred forty-four".

Divisors: 1 2 4 109 218 436 68879 137758 275516 7507811 15015622 30031244