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30347568 = 243370249
BaseRepresentation
bin111001111000…
…1000100110000
32010002211001000
41303301010300
530232110233
63002242000
7515643606
oct163610460
963084030
1030347568
1116148639
12a1b6300
136397254
14405d876
1529e6d13
hex1cf1130

30347568 has 40 divisors (see below), whose sum is σ = 87110000. Its totient is φ = 10115712.

The previous prime is 30347563. The next prime is 30347573. The reversal of 30347568 is 86574303.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30347563) and next prime (30347573).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (30347563) 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 in 7 ways as a sum of consecutive naturals, for example, 34693 + ... + 35556.

It is an arithmetic number, because the mean of its divisors is an integer number (2177750).

Almost surely, 230347568 is an apocalyptic number.

It is an amenable number.

30347568 is an abundant number, since it is smaller than the sum of its proper divisors (56762432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30347568 is a wasteful number, since it uses less digits than its factorization.

30347568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70266 (or 70254 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 30347568 is about 5508.8626775406. The cubic root of 30347568 is about 311.9186178274.

The spelling of 30347568 in words is "thirty million, three hundred forty-seven thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 70249 140498 210747 280996 421494 561992 632241 842988 1123984 1264482 1685976 1896723 2528964 3371952 3793446 5057928 7586892 10115856 15173784 30347568