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30230152 = 233778769
BaseRepresentation
bin111001101010…
…0011010001000
32002212211222021
41303110122020
530214331102
62555534224
7514644361
oct163243210
962784867
1030230152
11160783a7
12a15a374
136355984
14402cb68
1529c2137
hex1cd4688

30230152 has 8 divisors (see below), whose sum is σ = 56681550. Its totient is φ = 15115072.

The previous prime is 30230141. The next prime is 30230153. The reversal of 30230152 is 25103203.

It can be written as a sum of positive squares in only one way, i.e., 30096196 + 133956 = 5486^2 + 366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (30230153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1889377 + ... + 1889392.

Almost surely, 230230152 is an apocalyptic number.

It is an amenable number.

30230152 is a deficient number, since it is larger than the sum of its proper divisors (26451398).

30230152 is a wasteful number, since it uses less digits than its factorization.

30230152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778775 (or 3778771 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30230152 is about 5498.1953402912. The cubic root of 30230152 is about 311.5158225437.

Adding to 30230152 its reverse (25103203), we get a palindrome (55333355).

The spelling of 30230152 in words is "thirty million, two hundred thirty thousand, one hundred fifty-two".

Divisors: 1 2 4 8 3778769 7557538 15115076 30230152