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30642142200 = 233523161113239
BaseRepresentation
bin11100100010011010…
…011111101111111000
32221002111121002212120
4130202122133233320
51000223342022300
622024331241240
72133224624355
oct344232375770
987074532776
1030642142200
1111aa4765a6a
125b31ba9220
132b744275b7
1416a984162c
15be51bd3a0
hex72269fbf8

30642142200 has 384 divisors, whose sum is σ = 100964966400. Its totient is φ = 7676928000.

The previous prime is 30642142183. The next prime is 30642142211. The reversal of 30642142200 is 224124603.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128209681 + ... + 128209919.

It is an arithmetic number, because the mean of its divisors is an integer number (262929600).

Almost surely, 230642142200 is an apocalyptic number.

30642142200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30642142200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50482483200).

30642142200 is an abundant number, since it is smaller than the sum of its proper divisors (70322824200).

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

30642142200 is a wasteful number, since it uses less digits than its factorization.

30642142200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 30642142200 its reverse (224124603), we get a palindrome (30866266803).

The spelling of 30642142200 in words is "thirty billion, six hundred forty-two million, one hundred forty-two thousand, two hundred".