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30013208 = 2331121021
BaseRepresentation
bin111001001111…
…1011100011000
32002110211101022
41302133130120
530140410313
62551142012
7513052031
oct162373430
962424338
1030013208
1115a3a405
12a074908
1362aacc4
143db3a88
15297cc08
hex1c9f718

30013208 has 16 divisors (see below), whose sum is σ = 58090560. Its totient is φ = 14522400.

The previous prime is 30013201. The next prime is 30013283. The reversal of 30013208 is 80231003.

It is a Smith number, since the sum of its digits (17) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30013201) 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, 60263 + ... + 60758.

It is an arithmetic number, because the mean of its divisors is an integer number (3630660).

Almost surely, 230013208 is an apocalyptic number.

It is an amenable number.

30013208 is a deficient number, since it is larger than the sum of its proper divisors (28077352).

30013208 is a wasteful number, since it uses less digits than its factorization.

30013208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121058 (or 121054 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 30013208 is about 5478.4311622945. The cubic root of 30013208 is about 310.7688442682.

The spelling of 30013208 in words is "thirty million, thirteen thousand, two hundred eight".

Divisors: 1 2 4 8 31 62 124 248 121021 242042 484084 968168 3751651 7503302 15006604 30013208