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30042351 = 323338039
BaseRepresentation
bin111001010011…
…0100011101111
32002112022100200
41302212203233
530142323401
62551524543
7513233013
oct162464357
962468320
1030042351
1115a5a299
12a089753
1362bb351
143dc0543
152986686
hex1ca68ef

30042351 has 6 divisors (see below), whose sum is σ = 43394520. Its totient is φ = 20028228.

The previous prime is 30042343. The next prime is 30042359. The reversal of 30042351 is 15324003.

It is an interprime number because it is at equal distance from previous prime (30042343) and next prime (30042359).

It is not a de Polignac number, because 30042351 - 23 = 30042343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30042359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1669011 + ... + 1669028.

It is an arithmetic number, because the mean of its divisors is an integer number (7232420).

Almost surely, 230042351 is an apocalyptic number.

30042351 is a deficient number, since it is larger than the sum of its proper divisors (13352169).

30042351 is a wasteful number, since it uses less digits than its factorization.

30042351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338045 (or 3338042 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30042351 is about 5481.0903112428. The cubic root of 30042351 is about 310.8693978492.

Adding to 30042351 its reverse (15324003), we get a palindrome (45366354).

The spelling of 30042351 in words is "thirty million, forty-two thousand, three hundred fifty-one".

Divisors: 1 3 9 3338039 10014117 30042351