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30030280252 = 22737241120277
BaseRepresentation
bin11011111101111100…
…011011011000111100
32212111212021022001221
4123331330123120330
5443000222432002
621443513043124
72112115112320
oct337574333074
985455238057
1030030280252
1111810346035
1259a10b64a4
132aa77377cb
14164c48b980
15bab60ac37
hex6fdf1b63c

30030280252 has 48 divisors (see below), whose sum is σ = 61940283328. Its totient is φ = 12470215680.

The previous prime is 30030280243. The next prime is 30030280253. The reversal of 30030280252 is 25208203003.

It is a super-2 number, since 2×300302802522 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30030280253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189538 + ... + 309814.

Almost surely, 230030280252 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 30030280252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30970141664).

30030280252 is an abundant number, since it is smaller than the sum of its proper divisors (31910003076).

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

30030280252 is a wasteful number, since it uses less digits than its factorization.

30030280252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120566 (or 120564 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 30030280252 its reverse (25208203003), we get a palindrome (55238483255).

The spelling of 30030280252 in words is "thirty billion, thirty million, two hundred eighty thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 28 37 74 148 241 259 482 518 964 1036 1687 3374 6748 8917 17834 35668 62419 120277 124838 240554 249676 481108 841939 1683878 3367756 4450249 8900498 17800996 28986757 31151743 57973514 62303486 115947028 124606972 202907299 405814598 811629196 1072510009 2145020018 4290040036 7507570063 15015140126 30030280252