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30285012 = 2231926991
BaseRepresentation
bin111001110000…
…1110011010100
32002222122020010
41303201303110
530223110022
63001040220
7515263332
oct163416324
962878203
1030285012
111610563a
12a186070
136374934
144044b52
1529d350c
hex1ce1cd4

30285012 has 36 divisors (see below), whose sum is σ = 74590656. Its totient is φ = 9562320.

The previous prime is 30285011. The next prime is 30285023. The reversal of 30285012 is 21058203.

It is a super-3 number, since 3×302850123 (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30285012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30285011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 837 + ... + 7827.

Almost surely, 230285012 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 30285012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37295328).

30285012 is an abundant number, since it is smaller than the sum of its proper divisors (44305644).

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

30285012 is a wasteful number, since it uses less digits than its factorization.

30285012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7036 (or 7015 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 30285012 is about 5503.1819886317. The cubic root of 30285012 is about 311.7041492027.

The spelling of 30285012 in words is "thirty million, two hundred eighty-five thousand, twelve".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 361 722 1083 1444 2166 4332 6991 13982 20973 27964 41946 83892 132829 265658 398487 531316 796974 1593948 2523751 5047502 7571253 10095004 15142506 30285012