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30123214290 = 232513317910513
BaseRepresentation
bin11100000011011110…
…111100010111010010
32212202100010211121100
4130003132330113102
5443143020324130
621501033005230
72114324045121
oct340336742722
985670124540
1030123214290
1111858850824
125a08253816
132ac0a76070
14165a95dab8
15bb4866c60
hex7037bc5d2

30123214290 has 192 divisors, whose sum is σ = 88176291840. Its totient is φ = 7084247040.

The previous prime is 30123214279. The next prime is 30123214307. The reversal of 30123214290 is 9241232103.

It is a happy number.

30123214290 is a `hidden beast` number, since 3 + 0 + 1 + 232 + 1 + 429 + 0 = 666.

It is a super-2 number, since 2×301232142902 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

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 95 ways as a sum of consecutive naturals, for example, 2860074 + ... + 2870586.

It is an arithmetic number, because the mean of its divisors is an integer number (459251520).

Almost surely, 230123214290 is an apocalyptic number.

30123214290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30123214290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44088145920).

30123214290 is an abundant number, since it is smaller than the sum of its proper divisors (58053077550).

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

30123214290 is a wasteful number, since it uses less digits than its factorization.

30123214290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10649 (or 10646 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 30123214290 its reverse (9241232103), we get a palindrome (39364446393).

The spelling of 30123214290 in words is "thirty billion, one hundred twenty-three million, two hundred fourteen thousand, two hundred ninety".