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30350012 = 2273112011
BaseRepresentation
bin111001111000…
…1101010111100
32010002221101112
41303301222330
530232200022
63002301152
7515654000
oct163615274
963087345
1030350012
111614a460
12a1b77b8
1363983b4
144060700
1529e78e2
hex1cf1abc

30350012 has 48 divisors (see below), whose sum is σ = 67603200. Its totient is φ = 11818800.

The previous prime is 30349993. The next prime is 30350051. The reversal of 30350012 is 21005303.

It is a super-3 number, since 3×303500123 (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14087 + ... + 16097.

It is an arithmetic number, because the mean of its divisors is an integer number (1408400).

Almost surely, 230350012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30350012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33801600).

30350012 is an abundant number, since it is smaller than the sum of its proper divisors (37253188).

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

30350012 is a wasteful number, since it uses less digits than its factorization.

30350012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 30350012 is about 5509.0844974460. The cubic root of 30350012 is about 311.9269909161.

Adding to 30350012 its reverse (21005303), we get a palindrome (51355315).

The spelling of 30350012 in words is "thirty million, three hundred fifty thousand, twelve".

Divisors: 1 2 4 7 11 14 22 28 44 49 77 98 154 196 308 343 539 686 1078 1372 2011 2156 3773 4022 7546 8044 14077 15092 22121 28154 44242 56308 88484 98539 154847 197078 309694 394156 619388 689773 1083929 1379546 2167858 2759092 4335716 7587503 15175006 30350012