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30030210090 = 2325333669001
BaseRepresentation
bin11011111101111100…
…001010010000101010
32212111212010201211100
4123331330022100222
5443000213210330
621443511342230
72112114400626
oct337574122052
985455121740
1030030210090
11118102a8351
1259a1081976
132aa77118aa
14164c470186
15bab5e5060
hex6fdf0a42a

30030210090 has 24 divisors (see below), whose sum is σ = 78078546468. Its totient is φ = 8008056000.

The previous prime is 30030210059. The next prime is 30030210101. The reversal of 30030210090 is 9001203003.

It can be written as a sum of positive squares in 2 ways, for example, as 28647932049 + 1382278041 = 169257^2 + 37179^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166834411 + ... + 166834590.

Almost surely, 230030210090 is an apocalyptic number.

30030210090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30030210090 is an abundant number, since it is smaller than the sum of its proper divisors (48048336378).

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

30030210090 is a wasteful number, since it uses less digits than its factorization.

30030210090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333669014 (or 333669011 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 30030210090 its reverse (9001203003), we get a palindrome (39031413093).

The spelling of 30030210090 in words is "thirty billion, thirty million, two hundred ten thousand, ninety".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 333669001 667338002 1001007003 1668345005 2002014006 3003021009 3336690010 5005035015 6006042018 10010070030 15015105045 30030210090