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30145168 = 244145953
BaseRepresentation
bin111001011111…
…1101010010000
32002201112101201
41302333222100
530204121133
62554040544
7514141534
oct162775220
962645351
1030145168
111601a569
12a119154
1363260a1
144009bc4
1529a6d7d
hex1cbfa90

30145168 has 20 divisors (see below), whose sum is σ = 59832108. Its totient is φ = 14704640.

The previous prime is 30145151. The next prime is 30145169. The reversal of 30145168 is 86154103.

It can be written as a sum of positive squares in 2 ways, for example, as 4460544 + 25684624 = 2112^2 + 5068^2 .

It is not an unprimeable number, because it can be changed into a prime (30145169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22321 + ... + 23632.

Almost surely, 230145168 is an apocalyptic number.

It is an amenable number.

30145168 is a deficient number, since it is larger than the sum of its proper divisors (29686940).

30145168 is a wasteful number, since it uses less digits than its factorization.

30145168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46002 (or 45996 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 30145168 is about 5490.4615470833. The cubic root of 30145168 is about 311.2236340520.

The spelling of 30145168 in words is "thirty million, one hundred forty-five thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 16 41 82 164 328 656 45953 91906 183812 367624 735248 1884073 3768146 7536292 15072584 30145168